diff --git a/osu.Game.Rulesets.Taiko.Tests/TestSceneDrumSampleTriggerSource.cs b/osu.Game.Rulesets.Taiko.Tests/TestSceneDrumSampleTriggerSource.cs
index e8da7f6937..bce855ae45 100644
--- a/osu.Game.Rulesets.Taiko.Tests/TestSceneDrumSampleTriggerSource.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/TestSceneDrumSampleTriggerSource.cs
@@ -315,6 +315,9 @@ namespace osu.Game.Rulesets.Taiko.Tests
                 hitObjectContainer.Add(drawableSwell);
             });
 
+            // You might think that this should be a SwellTick since we're before the swell, but SwellTicks get no StartTime (ie. they are zero).
+            // This works fine in gameplay because they are judged whenever the user pressed, rather than being timed hits.
+            // But for sample playback purposes they can be ignored as noise.
             AddAssert("most valid object is swell", () => triggerSource.GetMostValidObject(), Is.InstanceOf<Swell>);
             checkSound(HitType.Centre, HitSampleInfo.HIT_NORMAL, SampleControlPoint.DEFAULT_BANK);
             checkSound(HitType.Rim, HitSampleInfo.HIT_CLAP, SampleControlPoint.DEFAULT_BANK);
@@ -349,6 +352,9 @@ namespace osu.Game.Rulesets.Taiko.Tests
                 hitObjectContainer.Add(drawableSwell);
             });
 
+            // You might think that this should be a SwellTick since we're before the swell, but SwellTicks get no StartTime (ie. they are zero).
+            // This works fine in gameplay because they are judged whenever the user pressed, rather than being timed hits.
+            // But for sample playback purposes they can be ignored as noise.
             AddAssert("most valid object is swell", () => triggerSource.GetMostValidObject(), Is.InstanceOf<Swell>);
             checkSound(HitType.Centre, HitSampleInfo.HIT_NORMAL, "drum");
             checkSound(HitType.Rim, HitSampleInfo.HIT_CLAP, "drum");