- ((cause (music-cause grob))
- (tag (if (and cause (integer? (ly:music-property cause 'input-tag)))
- (ly:music-property cause 'input-tag)
+ ((cause (event-cause grob))
+ (tag (if (and cause (integer? (ly:event-property cause 'input-tag)))
+ (ly:event-property cause 'input-tag)