I'm arranging a long(ish) medley of video game music for piano duet, and I'm running into a recurring problem.
Most of the movements in my medley have repeat bars, with a 1st and 2nd ending - easy enough.
But I'd like to introduce some very small changes to a few of the notes during the 2nd playthrough, hopefully without having to remove the repeat bars (because the song will be 20 pages long if I can't consolidate - duets require considerably more paper space).
I've spent my whole life assuming that you can't use repeat bars if you don't want the music to be identical on both playthroughs - but I've never looked for alternative ideas either.
Are there any good, clean, methods of notating a couple small changes to a few notes here and there for the 2nd playthrough, while using repeat bars, for cases where the 2nd playthrough is still 99% identical?