The easiest way is to consult a circle of fifths. As a band director, I require my students to keep one with them in their folder.
The second simple method is this. C has 0 flats, memorize that. Again, memorize that F has 1 flat.
Finally. After that, the name of the key signature will be the penultimate flat (that is the second to the last flat in the key signature.)
As an example, if there are 4 flats in your key signature they are: Bb Eb Ab and Db. They will always be listed in that order. Ab is the penultimate, and thusly this would be the key of Ab.
None. No key signature contains a mix of flats and sharps.
The key with three flats (Bb, Eb, Ab) is the key of Eb.
There are no sharps or flats in the key signature of C Major.
It's C major if there are no flats or sharps in the key signature.no sharps and flatsThere are no sharps or flats in the key signature of C Major.
No key signature has two of the same flat or sharp.
There can be a total of seven flats (or sharps) in a key signature.
The key signature with 7 flats is the key of C-flat major.
The key signature with six flats is the key of G-flat major.
The key with 6 flats in its key signature is the key of G flat major.
The scale that has two flats in its key signature is the key of Bb major.
The scale with 2 flats in its key signature is the key of Bb major.
A key signature, accidentals, a piece of music.
None. No key signature contains a mix of flats and sharps.
The key signature for a piece written in the key of six flats is G flat major.
The key signature of a musical scale with two flats is Bb major.
To find the key signature of a musical piece, look at the sharps or flats at the beginning of the staff. The number and placement of these symbols indicate the key of the piece.
The key with three flats (Bb, Eb, Ab) is the key of Eb.