This is the key signature for which MAJOR key?

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BlackTom AI · Accepted Answer

To identify the major key from a key signature, first observe the number and placement of flats in the signature.
In the treble clef shown, there are two flats. When a major key has two flats, the key is B-flat major. The flats are B♭ and E♭, which aligns with the standard key-signature pattern for two flats.
Consider the alternative that two flats could also correspond to a minor key (G minor). However, since the prompt specifically asks for the MAJOR key, we select B-flat major rather than G minor.
If there were more flats, we would consult the conventional major-key signatures: 0 flats = C major, 1 flat = F major, 2 flats = B♭ major, 3 flats = E♭ major, and so on. Conversely, if the sharps were present, we would apply the sharp-key signature rules to identify the corresponding major key.
Thus, the major key indicated by this two-flat signature is B-flat major.

Music 133 - Sections 98 & 99 Assignment 18: Key Signatures

This is the key signature for which MAJOR key?

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