Move definition of MusicController's position out of itself.

osu.Game/OsuGame.cs

@@ -21,6 +21,7 @@ using osu.Game.Modes;
 using osu.Game.Overlays.Toolbar;
 using osu.Game.Screens;
 using osu.Game.Screens.Menu;
+using OpenTK;
 
 namespace osu.Game
 {
@@ -101,7 +102,11 @@ namespace osu.Game
             //overlay elements
             (chat = new ChatOverlay { Depth = 0 }).Preload(this, overlayContent.Add);
             (options = new OptionsOverlay { Depth = -1 }).Preload(this, overlayContent.Add);
-            (musicController = new MusicController() { Depth = -3 }).Preload(this, overlayContent.Add);
+            (musicController = new MusicController()
+            {
+                Depth = -3,
+                Position = new Vector2(0, Toolbar.HEIGHT),
+            }).Preload(this, overlayContent.Add);
 
             Dependencies.Cache(options);
             Dependencies.Cache(musicController);

osu.Game/Overlays/MusicController.cs

@@ -28,8 +28,6 @@ namespace osu.Game.Overlays
 {
     public class MusicController : OverlayContainer
     {
-        private static readonly Vector2 start_position = new Vector2(0, 50);
-
         private MusicControllerBackground backgroundSprite;
         private DragBar progress;
         private TextAwesome playButton, listButton;
@@ -47,22 +45,15 @@ namespace osu.Game.Overlays
         private BeatmapDatabase beatmaps;
         private BaseGame game;
 
+        private Container dragContainer;
+
         public MusicController()
         {
             Width = 400;
             Height = 130;
-            CornerRadius = 5;
-            EdgeEffect = new EdgeEffect
-            {
-                Type = EdgeEffectType.Shadow,
-                Colour = Color4.Black.Opacity(40),
-                Radius = 5,
-            };
 
-            Masking = true;
             Anchor = Anchor.TopRight;//placeholder
             Origin = Anchor.TopRight;
-            Position = start_position;
             Margin = new MarginPadding(10);
         }
 
@@ -75,13 +66,13 @@ namespace osu.Game.Overlays
             // Diminish the drag distance as we go further to simulate "rubber band" feeling.
             change *= (float)Math.Pow(change.Length, 0.7f) / change.Length;
 
-            MoveTo(start_position + change);
+            dragContainer.MoveTo(change);
             return base.OnDrag(state);
         }
 
         protected override bool OnDragEnd(InputState state)
         {
-            MoveTo(start_position, 800, EasingTypes.OutElastic);
+            dragContainer.MoveTo(Vector2.Zero, 800, EasingTypes.OutElastic);
             return base.OnDragEnd(state);
         }
 
@@ -91,6 +82,19 @@ namespace osu.Game.Overlays
         {
             unicodeString = config.GetUnicodeString;
 
+            Children = new Drawable[]
+            {
+                dragContainer = new Container
+                {
+                    Masking = true,
+                    CornerRadius = 5,
+                    EdgeEffect = new EdgeEffect
+                    {
+                        Type = EdgeEffectType.Shadow,
+                        Colour = Color4.Black.Opacity(40),
+                        Radius = 5,
+                    },
+                    RelativeSizeAxes = Axes.Both,
                     Children = new Drawable[]
                     {
                         title = new SpriteText
@@ -199,6 +203,8 @@ namespace osu.Game.Overlays
                             Colour = colours.Yellow,
                             SeekRequested = seek
                         }
+                    }
+                }
             };
         
             this.beatmaps = beatmaps;
@@ -210,7 +216,7 @@ namespace osu.Game.Overlays
             playList = beatmaps.GetAllWithChildren<BeatmapSetInfo>();
 
             backgroundSprite = new MusicControllerBackground();
-            AddInternal(backgroundSprite);
+            dragContainer.Add(backgroundSprite);
         }
 
         protected override void LoadComplete()
@@ -333,7 +339,7 @@ namespace osu.Game.Overlays
             (newBackground = new MusicControllerBackground(beatmap)).Preload(game, delegate
             {
 
-                Add(newBackground);
+                dragContainer.Add(newBackground);
 
                 switch (direction)
                 {

osu.Game/Overlays/Toolbar/Toolbar.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Overlays.Toolbar
 {
     public class Toolbar : OverlayContainer
     {
-        private const float height = 50;
+        public const float HEIGHT = 50;
 
         public Action OnHome;
         public Action<PlayMode> OnPlayModeChange;
@@ -120,7 +120,7 @@ namespace osu.Game.Overlays.Toolbar
             };
 
             RelativeSizeAxes = Axes.X;
-            Size = new Vector2(1, height);
+            Size = new Vector2(1, HEIGHT);
         }
 
         public void SetGameMode(PlayMode mode) => modeSelector.SetGameMode(mode);