The two people above you are pretty much saying the same thing. Piano keys being unmarked and making sense to pianists as the best way was being used as proof t

The two people above you are pretty much saying the same thing. Piano keys being unmarked and making sense to pianists as the best way was being used as proof that using keys not marked with arrows could be the best way for editors. I'll throw in with agreeing as well, my piano teacher hated when music had finger numbers on it and things like that, using them just slowed you down and messed you up, especially when the hands changed positions. Labeled piano keys would be bad because it would prevent people from learning the right way to play.