Question

What is a sharp or flat in front of a note called?

Answer 1

They are called accedentals

Answer 2

Answer:

In music, an accidental is a note of a pitch (or pitch class) that is not a member of the scale or mode indicated by the most recently applied key signature. In musical notation, the sharp (♯), flat (♭), and natural (♮) symbols, among others, mark such notes—and those symbols are also called accidentals.