B-flat major
| Relative key | G minor |
|---|---|
| Parallel key | B-flat minor |
| Dominant key | F major |
| Subdominant key | E-flat major |
| Component pitches | |
| B♭, C, D, E♭, F, G, A | |
B-flat major is a major scale based on B♭, with pitches B♭, C, D, E♭, F, G, and A. Its key signature has two flats. Its relative minor is G minor and its parallel minor is B-flat minor.
The B-flat major scale is:
Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary. The B-flat harmonic major and melodic major scales are:
Many transposing instruments are pitched in B-flat major, including the clarinet, trumpet, tenor saxophone, and soprano saxophone. As a result, B-flat major is one of the most popular keys for concert band compositions.