Key Signature At Start of Piano Sheet Music

by asker
(singapore)

What does that ## mean at the start of a piano sheet. i know if its after a note, it means that note's sharp. but atthe start? like sometime it can be just 1 # and at other times 4 ####?

ANSWER

What you are seeing is called the "Key Signature". This tells you which notes are sharp or flat THROUGHOUT THE PIECE.

For a thorough explanation of Key Signatures, please see:

Understanding Key Signatures

Lynne