Question

What does a flat do?

Answer 1

Answer: Lowers by half step

Explanation: A flat sign means to play the key that is a half step lower, therefore if you come across an F note on a piece of music, it means to play the note that is a half step lower. That note is F flat and it is the enharmonic of E on piano, a white key.

Answer 2

A sharp raises a note, while a flat lowers a note by half step. Accidentals in a measure last throughout the measure but can be canceled by a natural sign. Sharps and flats share a common pitch and are called enharmonic.

Step-by-step explanation:

Hope this helps! :)