Well, yes and no. Yes, it is a real key. I can certainly write a piece in G flat minor. But my key signature would have five flats and two *double* flats, which is certainly cumbersome. So why would I choose to do this when I could get the exact same sound by writing my piece in the enharmonic key of F# minor, which would give me the vastly simpler key signature of three sharps?
So while Gb minor certainly exists theoretically, in practical terms there's just no reason to ever use it.
That is the signature for the key of Db. Or, it's relative minor, Bb minor.
Bb major (B flat)
Bb. B flat has two flats, the first two flats on the staff: Bb, and Eb. Also, the relative minor to Bb, G minor, also contains two flats in the key signature; Bb, and Eb. To find the relative minor to a major key, simply count down 2 and one half steps. ie: Bb, Ab, G, making the relative minor to Bb "G minor", which also has the same key signature.
The key with 6 flats is G flat major (this is the same as the key with 6 sharps: F sharp major). The relative minor is e flat minor (also called d sharp minor).
G flat minor or F sharp minor. F♯, C♯, G♯, D♯, and A♯ minor all have a G♯ in their key signature.
The major key signature written with two flats, (B flat and E flat) is B flat major.Its corresponding minor key is G minor.
That is the signature for the key of Db. Or, it's relative minor, Bb minor.
The key of B flat major, or g G minor, has two flats. The flats are B flat and E flat.
The key of G-sharp minor has 5 sharps (it's the relative to B major). G-flat minor is a key that only exists in theory, because that key signature would contain 9 flats. The limit on flats or sharps in a key is 7.
To change a musical composition from a major key to a minor key, specifically from A flat major to A flat minor, you would need to lower the third, sixth, and seventh notes of the scale by a half step. This means changing the C, F, and G notes to C flat, F flat, and G flat. This alteration will give the composition a minor key feel.
The chords in the key of E flat major are E flat major, F minor, G minor, A flat major, B flat major, C minor, and D diminished.
The key signature is E flat major, which is also, C minor, the relative minor of E flat major. You can find out what flat key signature you're in by finding the second to last flat (in this case E flat). It is the major version of that key signature!
B-flat and E-flat are found in B-flat major and G minor.
The chords in the key of E flat are Eb major, F minor, G minor, Ab major, Bb major, C minor, and D diminished.
D flat major, or b flat minor. The flats are B, E, A, D and G, in that order.
If I understand your question correctly: G minor has two flats, as does B flat major.
Bb major (B flat)