I am confused. I have bought a digital piano (a Yamaha Clavinova CLP-735) and I saw this :
So they say the lowest note on the piano is A-1.
However, on the musical apps that I use on my phone, they refer to the lowest note on the piano as A0. Obviously, this shifts all numbers by 1.
It seems unlikely the manual for the digital piano is wrong, as they clearly know how music works?
So which one is wrong? Or can both be correct, and both conventions exist? If so, is there a context that helps decide which of the 2 conventions is the appropriate one?
