What Did I Do?

[JBMusic]

Here is a picture of a vocal track. The light blue part is how it should be but apparently I accidently hit a key command that changed an event to black. What did I unintentionally do? It sounds OK but I just would like to know what command I inadvertently initiated.
Thanks

John B

 

[SwitchBack]

Two separate takes (so two separate WAV files)? Looks like you used the bend tool on the second part, to adjust timing, and ticked the bend marker checkbox for the event (right-click menu).

 

[Lukas]

What did I unintentionally do?

You have turned on Bend Markers.