Key signature
Scales with flat key signatures
"Flat key signatures" consist of one to seven flats, applied as: B E A D G C F The mnemonic device is then reversed for use in the flat keys: "Battle Ends And Down Goes Charles' Father".

Key signature

Section Title: Scales with flat key signatures
Table Section Text: "Flat key signatures" consist of one to seven flats, applied as: B E A D G C F The mnemonic device is then reversed for use in the flat keys: "Battle Ends And Down Goes Charles' Father".

Major key	Number of flats	Flat notes	Minor key	Enharmonic equivalent

C major	0	A minor	None

F major	1	B♭	D minor	None

B♭ major	2	B♭, E♭	G minor	None

E♭ major	3	B♭, E♭, A♭	C minor	None

A♭ major	4	B♭, E♭, A♭, D♭	F minor	None

D♭ major	5	B♭, E♭, A♭, D♭, G♭	B♭ minor	C♯ major/A♯ minor

G♭ major	6	B♭, E♭, A♭, D♭, G♭, C♭	E♭ minor	F♯ major/D♯ minor

C♭ major	7	B♭, E♭, A♭, D♭, G♭, C♭, F♭	A♭ minor	B major/G♯ minor

Sentence(s)

F major (D minor) has one flat which is on the B; then B♭ major (G minor) has two flats (on B and E).

final_sentence: F major (D minor) has one flat which is on the B; then B♭ major (G minor) has two flats (on B and E).