diff --git a/src/Audio/AudioDevice.cs b/src/Audio/AudioDevice.cs
index 84a2c99..8892582 100644
--- a/src/Audio/AudioDevice.cs
+++ b/src/Audio/AudioDevice.cs
@@ -194,17 +194,17 @@ namespace MoonWorks.Audio
 			float end,
 			float duration
 		) {
-			var tween = AudioTweenPool.Obtain();
-			tween.SoundInstanceReference = new WeakReference<SoundInstance>(soundInstance);
-			tween.Property = property;
-			tween.EasingFunction = easingFunction;
-			tween.Start = start;
-			tween.End = end;
-			tween.Duration = duration;
-			tween.Time = 0;
-
 			lock (StateLock)
 			{
+				var tween = AudioTweenPool.Obtain();
+				tween.SoundInstanceReference = new WeakReference<SoundInstance>(soundInstance);
+				tween.Property = property;
+				tween.EasingFunction = easingFunction;
+				tween.Start = start;
+				tween.End = end;
+				tween.Duration = duration;
+				tween.Time = 0;
+
 				AudioTweens.Add(tween);
 			}
 		}