One sustained note in our current song sketch has a distracting fizzy texture. The rest of the phrase works for the melody, and my writing partner wants to keep its timing. Starting the section again could disturb the phrasing. We can try another generation of the same musical passage, but that might also replace the little pause that makes the line convincing. I have been reading about ai music artifact removal as one possible route, without assuming it can rescue this particular note. At this stage the goal is a workable composition demo. There is no release deadline attached. Would you first shorten the note, replace that phrase, or test a conservative cleanup on a copy? Keeping the character of the vocal matters most. An imperfect note could still serve the sketch. What would make you abandon repair and regenerate?