## Double Flat

A double flat (♭♭) lowers a note by two semitones — two keys to the left.

The mirror of the double sharp, and there for the same reason: the letter name has to stay right for the key, even when the key on the piano has another name.


## How To Spot Double Flat

Two flat symbols side by side before a note head. Rare, and almost always in flat keys.


## Find It In Thirty Seconds

Find one, play the key it means, then name it both ways — B♭♭ is the A key, but calling it A would break the spelling of the scale it belongs to.

Open any piece of sheet music on this site and do it now. Reading is a recognition skill, and recognition is built by finding things, not by reading about them.