diff --git a/osu-framework b/osu-framework
index 167d5cda8f..2804e052ca 160000
--- a/osu-framework
+++ b/osu-framework
@@ -1 +1 @@
-Subproject commit 167d5cda8f3ddae702ffc8d8d22dac67e48b509c
+Subproject commit 2804e052ca2ce068f015771d28170d18573687e1
diff --git a/osu.Game/Beatmaps/BeatmapInfo.cs b/osu.Game/Beatmaps/BeatmapInfo.cs
index ebf77bf9df..c962201fe3 100644
--- a/osu.Game/Beatmaps/BeatmapInfo.cs
+++ b/osu.Game/Beatmaps/BeatmapInfo.cs
@@ -52,6 +52,8 @@ namespace osu.Game.Beatmaps
         [JsonProperty("file_sha2")]
         public string Hash { get; set; }
 
+        public bool Hidden { get; set; }
+
         /// <summary>
         /// MD5 is kept for legacy support (matching against replays, osu-web-10 etc.).
         /// </summary>
diff --git a/osu.Game/Beatmaps/BeatmapManager.cs b/osu.Game/Beatmaps/BeatmapManager.cs
index c52576fb9f..551612330b 100644
--- a/osu.Game/Beatmaps/BeatmapManager.cs
+++ b/osu.Game/Beatmaps/BeatmapManager.cs
@@ -33,11 +33,21 @@ namespace osu.Game.Beatmaps
         /// </summary>
         public event Action<BeatmapSetInfo> BeatmapSetAdded;
 
+        /// <summary>
+        /// Fired when a single difficulty has been hidden.
+        /// </summary>
+        public event Action<BeatmapInfo> BeatmapHidden;
+
         /// <summary>
         /// Fired when a <see cref="BeatmapSetInfo"/> is removed from the database.
         /// </summary>
         public event Action<BeatmapSetInfo> BeatmapSetRemoved;
 
+        /// <summary>
+        /// Fired when a single difficulty has been restored.
+        /// </summary>
+        public event Action<BeatmapInfo> BeatmapRestored;
+
         /// <summary>
         /// A default representation of a WorkingBeatmap to use when no beatmap is available.
         /// </summary>
@@ -71,6 +81,8 @@ namespace osu.Game.Beatmaps
             beatmaps = new BeatmapStore(connection);
             beatmaps.BeatmapSetAdded += s => BeatmapSetAdded?.Invoke(s);
             beatmaps.BeatmapSetRemoved += s => BeatmapSetRemoved?.Invoke(s);
+            beatmaps.BeatmapHidden += b => BeatmapHidden?.Invoke(b);
+            beatmaps.BeatmapRestored += b => BeatmapRestored?.Invoke(b);
 
             this.storage = storage;
             this.files = files;
@@ -162,8 +174,7 @@ namespace osu.Game.Beatmaps
             // If we have an ID then we already exist in the database.
             if (beatmapSetInfo.ID != 0) return;
 
-            lock (beatmaps)
-                beatmaps.Add(beatmapSetInfo);
+            beatmaps.Add(beatmapSetInfo);
         }
 
         /// <summary>
@@ -173,22 +184,23 @@ namespace osu.Game.Beatmaps
         /// <param name="beatmapSet">The beatmap set to delete.</param>
         public void Delete(BeatmapSetInfo beatmapSet)
         {
-            lock (beatmaps)
-                if (!beatmaps.Delete(beatmapSet)) return;
+            if (!beatmaps.Delete(beatmapSet)) return;
 
             if (!beatmapSet.Protected)
                 files.Dereference(beatmapSet.Files.Select(f => f.FileInfo).ToArray());
         }
 
         /// <summary>
-        /// Delete a beatmap from the manager.
-        /// Is a no-op for already deleted beatmaps.
+        /// Delete a beatmap difficulty.
         /// </summary>
-        /// <param name="beatmap">The beatmap difficulty to delete.</param>
-        public void Delete(BeatmapInfo beatmap)
-        {
-            //todo: implement
-        }
+        /// <param name="beatmap">The beatmap difficulty to hide.</param>
+        public void Hide(BeatmapInfo beatmap) => beatmaps.Hide(beatmap);
+
+        /// <summary>
+        /// Restore a beatmap difficulty.
+        /// </summary>
+        /// <param name="beatmap">The beatmap difficulty to restore.</param>
+        public void Restore(BeatmapInfo beatmap) => beatmaps.Restore(beatmap);
 
         /// <summary>
         /// Returns a <see cref="BeatmapSetInfo"/> to a usable state if it has previously been deleted but not yet purged.
@@ -197,8 +209,7 @@ namespace osu.Game.Beatmaps
         /// <param name="beatmapSet">The beatmap to restore.</param>
         public void Undelete(BeatmapSetInfo beatmapSet)
         {
-            lock (beatmaps)
-                if (!beatmaps.Undelete(beatmapSet)) return;
+            if (!beatmaps.Undelete(beatmapSet)) return;
 
             if (!beatmapSet.Protected)
                 files.Reference(beatmapSet.Files.Select(f => f.FileInfo).ToArray());
@@ -258,6 +269,13 @@ namespace osu.Game.Beatmaps
             }
         }
 
+        /// <summary>
+        /// Refresh an existing instance of a <see cref="BeatmapSetInfo"/> from the store.
+        /// </summary>
+        /// <param name="beatmapSet">A stale instance.</param>
+        /// <returns>A fresh instance.</returns>
+        public BeatmapSetInfo Refresh(BeatmapSetInfo beatmapSet) => QueryBeatmapSet(s => s.ID == beatmapSet.ID);
+
         /// <summary>
         /// Perform a lookup query on available <see cref="BeatmapSetInfo"/>s.
         /// </summary>
@@ -265,7 +283,7 @@ namespace osu.Game.Beatmaps
         /// <returns>Results from the provided query.</returns>
         public List<BeatmapSetInfo> QueryBeatmapSets(Expression<Func<BeatmapSetInfo, bool>> query)
         {
-            lock (beatmaps) return beatmaps.QueryAndPopulate(query);
+            return beatmaps.QueryAndPopulate(query);
         }
 
         /// <summary>
@@ -275,15 +293,12 @@ namespace osu.Game.Beatmaps
         /// <returns>The first result for the provided query, or null if no results were found.</returns>
         public BeatmapInfo QueryBeatmap(Func<BeatmapInfo, bool> query)
         {
-            lock (beatmaps)
-            {
-                BeatmapInfo set = beatmaps.Query<BeatmapInfo>().FirstOrDefault(query);
+            BeatmapInfo set = beatmaps.Query<BeatmapInfo>().FirstOrDefault(query);
 
-                if (set != null)
-                    beatmaps.Populate(set);
+            if (set != null)
+                beatmaps.Populate(set);
 
-                return set;
-            }
+            return set;
         }
 
         /// <summary>
diff --git a/osu.Game/Beatmaps/BeatmapStore.cs b/osu.Game/Beatmaps/BeatmapStore.cs
index 8212712bf9..0f2d8cffa6 100644
--- a/osu.Game/Beatmaps/BeatmapStore.cs
+++ b/osu.Game/Beatmaps/BeatmapStore.cs
@@ -16,11 +16,14 @@ namespace osu.Game.Beatmaps
         public event Action<BeatmapSetInfo> BeatmapSetAdded;
         public event Action<BeatmapSetInfo> BeatmapSetRemoved;
 
+        public event Action<BeatmapInfo> BeatmapHidden;
+        public event Action<BeatmapInfo> BeatmapRestored;
+
         /// <summary>
         /// The current version of this store. Used for migrations (see <see cref="PerformMigration(int, int)"/>).
         /// The initial version is 1.
         /// </summary>
-        protected override int StoreVersion => 3;
+        protected override int StoreVersion => 4;
 
         public BeatmapStore(SQLiteConnection connection)
             : base(connection)
@@ -81,6 +84,10 @@ namespace osu.Game.Beatmaps
                         // Added MD5Hash column to BeatmapInfo
                         Connection.MigrateTable<BeatmapInfo>();
                         break;
+                    case 4:
+                        // Added Hidden column to BeatmapInfo
+                        Connection.MigrateTable<BeatmapInfo>();
+                        break;
                 }
             }
         }
@@ -100,7 +107,7 @@ namespace osu.Game.Beatmaps
         }
 
         /// <summary>
-        /// Delete a <see cref="BeatmapSetInfo"/> to the database.
+        /// Delete a <see cref="BeatmapSetInfo"/> from the database.
         /// </summary>
         /// <param name="beatmapSet">The beatmap to delete.</param>
         /// <returns>Whether the beatmap's <see cref="BeatmapSetInfo.DeletePending"/> was changed.</returns>
@@ -131,6 +138,38 @@ namespace osu.Game.Beatmaps
             return true;
         }
 
+        /// <summary>
+        /// Hide a <see cref="BeatmapInfo"/> in the database.
+        /// </summary>
+        /// <param name="beatmap">The beatmap to hide.</param>
+        /// <returns>Whether the beatmap's <see cref="BeatmapInfo.Hidden"/> was changed.</returns>
+        public bool Hide(BeatmapInfo beatmap)
+        {
+            if (beatmap.Hidden) return false;
+
+            beatmap.Hidden = true;
+            Connection.Update(beatmap);
+
+            BeatmapHidden?.Invoke(beatmap);
+            return true;
+        }
+
+        /// <summary>
+        /// Restore a previously hidden <see cref="BeatmapInfo"/>.
+        /// </summary>
+        /// <param name="beatmap">The beatmap to restore.</param>
+        /// <returns>Whether the beatmap's <see cref="BeatmapInfo.Hidden"/> was changed.</returns>
+        public bool Restore(BeatmapInfo beatmap)
+        {
+            if (!beatmap.Hidden) return false;
+
+            beatmap.Hidden = false;
+            Connection.Update(beatmap);
+
+            BeatmapRestored?.Invoke(beatmap);
+            return true;
+        }
+
         private void cleanupPendingDeletions()
         {
             Connection.RunInTransaction(() =>
diff --git a/osu.Game/Beatmaps/Drawables/BeatmapGroup.cs b/osu.Game/Beatmaps/Drawables/BeatmapGroup.cs
index b47210620d..19dfc22506 100644
--- a/osu.Game/Beatmaps/Drawables/BeatmapGroup.cs
+++ b/osu.Game/Beatmaps/Drawables/BeatmapGroup.cs
@@ -25,6 +25,8 @@ namespace osu.Game.Beatmaps.Drawables
 
         public Action<BeatmapSetInfo> DeleteRequested;
 
+        public Action<BeatmapSetInfo> RestoreHiddenRequested;
+
         public Action<BeatmapInfo> DeleteDifficultyRequested;
 
         public BeatmapSetHeader Header;
@@ -71,10 +73,11 @@ namespace osu.Game.Beatmaps.Drawables
             {
                 GainedSelection = headerGainedSelection,
                 DeleteRequested = b => DeleteRequested(b),
+                RestoreHiddenRequested = b => RestoreHiddenRequested(b),
                 RelativeSizeAxes = Axes.X,
             };
 
-            BeatmapSet.Beatmaps = BeatmapSet.Beatmaps.OrderBy(b => b.StarDifficulty).ToList();
+            BeatmapSet.Beatmaps = BeatmapSet.Beatmaps.Where(b => !b.Hidden).OrderBy(b => b.StarDifficulty).ToList();
             BeatmapPanels = BeatmapSet.Beatmaps.Select(b => new BeatmapPanel(b)
             {
                 Alpha = 0,
diff --git a/osu.Game/Beatmaps/Drawables/BeatmapPanel.cs b/osu.Game/Beatmaps/Drawables/BeatmapPanel.cs
index 1006380a2b..6b17b3bb8b 100644
--- a/osu.Game/Beatmaps/Drawables/BeatmapPanel.cs
+++ b/osu.Game/Beatmaps/Drawables/BeatmapPanel.cs
@@ -158,7 +158,7 @@ namespace osu.Game.Beatmaps.Drawables
         {
             new OsuMenuItem("Play", MenuItemType.Highlighted, () => StartRequested?.Invoke(this)),
             new OsuMenuItem("Edit", MenuItemType.Standard, () => EditRequested?.Invoke(this)),
-            new OsuMenuItem("Delete", MenuItemType.Destructive, () => DeleteRequested?.Invoke(Beatmap)),
+            new OsuMenuItem("Hide", MenuItemType.Destructive, () => DeleteRequested?.Invoke(Beatmap)),
         };
     }
 }
diff --git a/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs b/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs
index b475a23ffd..ee75b77747 100644
--- a/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs
+++ b/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using OpenTK;
 using OpenTK.Graphics;
 using osu.Framework.Allocation;
@@ -25,6 +26,8 @@ namespace osu.Game.Beatmaps.Drawables
 
         public Action<BeatmapSetInfo> DeleteRequested;
 
+        public Action<BeatmapSetInfo> RestoreHiddenRequested;
+
         private readonly SpriteText title;
         private readonly SpriteText artist;
 
@@ -164,6 +167,9 @@ namespace osu.Game.Beatmaps.Drawables
                 if (State == PanelSelectedState.NotSelected)
                     items.Add(new OsuMenuItem("Expand", MenuItemType.Highlighted, () => State = PanelSelectedState.Selected));
 
+                if (beatmap.BeatmapSetInfo.Beatmaps.Any(b => b.Hidden))
+                    items.Add(new OsuMenuItem("Restore all hidden", MenuItemType.Standard, () => RestoreHiddenRequested?.Invoke(beatmap.BeatmapSetInfo)));
+
                 items.Add(new OsuMenuItem("Delete", MenuItemType.Destructive, () => DeleteRequested?.Invoke(beatmap.BeatmapSetInfo)));
 
                 return items.ToArray();
diff --git a/osu.Game/Screens/Select/BeatmapCarousel.cs b/osu.Game/Screens/Select/BeatmapCarousel.cs
index a1c7f64188..5d495a61f0 100644
--- a/osu.Game/Screens/Select/BeatmapCarousel.cs
+++ b/osu.Game/Screens/Select/BeatmapCarousel.cs
@@ -107,12 +107,39 @@ namespace osu.Game.Screens.Select
             });
         }
 
-        public void RemoveBeatmap(BeatmapSetInfo beatmapSet)
+        public void RemoveBeatmap(BeatmapSetInfo beatmapSet) => removeGroup(groups.Find(b => b.BeatmapSet.ID == beatmapSet.ID));
+
+        internal void UpdateBeatmap(BeatmapInfo beatmap)
         {
-            Schedule(delegate
+            // todo: this method should not run more than once for the same BeatmapSetInfo.
+            var set = manager.Refresh(beatmap.BeatmapSet);
+
+            // todo: this method should be smarter as to not recreate panels that haven't changed, etc.
+            var group = groups.Find(b => b.BeatmapSet.ID == set.ID);
+
+            if (group == null)
+                return;
+
+            var newGroup = createGroup(set);
+
+            int i = groups.IndexOf(group);
+            groups.RemoveAt(i);
+            groups.Insert(i, newGroup);
+
+            if (selectedGroup == group && newGroup.BeatmapPanels.Count == 0)
+                selectedGroup = null;
+
+            Filter(null, false);
+
+            //check if we can/need to maintain our current selection.
+            if (selectedGroup == group && newGroup.BeatmapPanels.Count > 0)
             {
-                removeGroup(groups.Find(b => b.BeatmapSet.ID == beatmapSet.ID));
-            });
+                var newSelection =
+                    newGroup.BeatmapPanels.Find(p => p.Beatmap.ID == selectedPanel?.Beatmap.ID) ??
+                    newGroup.BeatmapPanels[Math.Min(newGroup.BeatmapPanels.Count - 1, group.BeatmapPanels.IndexOf(selectedPanel))];
+
+                selectGroup(newGroup, newSelection);
+            }
         }
 
         public void SelectBeatmap(BeatmapInfo beatmap, bool animated = true)
@@ -142,6 +169,8 @@ namespace osu.Game.Screens.Select
 
         public Action<BeatmapSetInfo> DeleteRequested;
 
+        public Action<BeatmapSetInfo> RestoreRequested;
+
         public Action<BeatmapInfo> DeleteDifficultyRequested;
 
         public void SelectNext(int direction = 1, bool skipDifficulties = true)
@@ -310,6 +339,7 @@ namespace osu.Game.Screens.Select
                 SelectionChanged = (g, p) => selectGroup(g, p),
                 StartRequested = b => StartRequested?.Invoke(),
                 DeleteRequested = b => DeleteRequested?.Invoke(b),
+                RestoreHiddenRequested = s => RestoreRequested?.Invoke(s),
                 DeleteDifficultyRequested = b => DeleteDifficultyRequested?.Invoke(b),
                 State = BeatmapGroupState.Collapsed
             };
diff --git a/osu.Game/Screens/Select/BeatmapDeleteDialog.cs b/osu.Game/Screens/Select/BeatmapDeleteDialog.cs
index 15ec84a7d8..aa37705cdf 100644
--- a/osu.Game/Screens/Select/BeatmapDeleteDialog.cs
+++ b/osu.Game/Screens/Select/BeatmapDeleteDialog.cs
@@ -1,7 +1,6 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using System;
 using osu.Framework.Allocation;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics;
@@ -13,28 +12,16 @@ namespace osu.Game.Screens.Select
     {
         private BeatmapManager manager;
 
-        private readonly Action deleteAction;
-
         [BackgroundDependencyLoader]
         private void load(BeatmapManager beatmapManager)
         {
             manager = beatmapManager;
         }
 
-        public BeatmapDeleteDialog(BeatmapSetInfo beatmap) : this()
+        public BeatmapDeleteDialog(BeatmapSetInfo beatmap)
         {
-            BodyText = $@"{beatmap.Metadata?.Artist} - {beatmap.Metadata?.Title} (ALL DIFFICULTIES)";
-            deleteAction = () => manager.Delete(beatmap);
-        }
+            BodyText = $@"{beatmap.Metadata?.Artist} - {beatmap.Metadata?.Title}";
 
-        public BeatmapDeleteDialog(BeatmapInfo beatmap) : this()
-        {
-            BodyText = $@"{beatmap.Metadata?.Artist} - {beatmap.Metadata?.Title} [{beatmap.Version}]";
-            deleteAction = () => manager.Delete(beatmap);
-        }
-
-        public BeatmapDeleteDialog()
-        {
             Icon = FontAwesome.fa_trash_o;
             HeaderText = @"Confirm deletion of";
             Buttons = new PopupDialogButton[]
@@ -42,7 +29,7 @@ namespace osu.Game.Screens.Select
                 new PopupDialogOkButton
                 {
                     Text = @"Yes. Totally. Delete it.",
-                    Action = () => deleteAction(),
+                    Action = () => manager.Delete(beatmap),
                 },
                 new PopupDialogCancelButton
                 {
diff --git a/osu.Game/Screens/Select/SongSelect.cs b/osu.Game/Screens/Select/SongSelect.cs
index b3ee33e7c6..b743af5351 100644
--- a/osu.Game/Screens/Select/SongSelect.cs
+++ b/osu.Game/Screens/Select/SongSelect.cs
@@ -107,7 +107,8 @@ namespace osu.Game.Screens.Select
                 SelectionChanged = carouselSelectionChanged,
                 BeatmapsChanged = carouselBeatmapsLoaded,
                 DeleteRequested = b => promptDelete(b),
-                DeleteDifficultyRequested = b => promptDelete(b),
+                RestoreRequested = s => { foreach (var b in s.Beatmaps) manager.Restore(b); },
+                DeleteDifficultyRequested = b => manager.Hide(b),
                 StartRequested = () => carouselRaisedStart(),
             });
             Add(FilterControl = new FilterControl
@@ -176,6 +177,8 @@ namespace osu.Game.Screens.Select
 
             manager.BeatmapSetAdded += onBeatmapSetAdded;
             manager.BeatmapSetRemoved += onBeatmapSetRemoved;
+            manager.BeatmapHidden += onBeatmapHidden;
+            manager.BeatmapRestored += onBeatmapRestored;
 
             dialogOverlay = dialog;
 
@@ -192,6 +195,9 @@ namespace osu.Game.Screens.Select
             carousel.AllowSelection = !Beatmap.Disabled;
         }
 
+        private void onBeatmapRestored(BeatmapInfo b) => carousel.UpdateBeatmap(b);
+        private void onBeatmapHidden(BeatmapInfo b) => carousel.UpdateBeatmap(b);
+
         private void carouselBeatmapsLoaded()
         {
             if (Beatmap.Value.BeatmapSetInfo?.DeletePending == false)
@@ -380,10 +386,7 @@ namespace osu.Game.Screens.Select
             }
         }
 
-        private void addBeatmapSet(BeatmapSetInfo beatmapSet)
-        {
-            carousel.AddBeatmap(beatmapSet);
-        }
+        private void addBeatmapSet(BeatmapSetInfo beatmapSet) => carousel.AddBeatmap(beatmapSet);
 
         private void removeBeatmapSet(BeatmapSetInfo beatmapSet)
         {
@@ -400,14 +403,6 @@ namespace osu.Game.Screens.Select
             dialogOverlay?.Push(new BeatmapDeleteDialog(beatmap));
         }
 
-        private void promptDelete(BeatmapInfo beatmap)
-        {
-            if (beatmap == null)
-                return;
-
-            dialogOverlay?.Push(new BeatmapDeleteDialog(beatmap));
-        }
-
         protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
         {
             if (args.Repeat) return false;