- Also see: B-flat minor.
The B♭ (B-flat) major scale consists of the pitches B♭, C, D, E♭, F, G, and A. Its key signature has two flats, B/E (see below: Scales and keys).
Its relative minor is G minor, and its parallel minor is B♭ minor.
B-flat major is a suitable key for most wind instruments, especially those for which it is their home key, such as clarinets, trumpets, tenor saxophone, soprano saxophone and the flutes in B-flat.
Joseph Haydn's Symphony No. 98 is credited as the first symphony he (or anyone else) wrote in that key in which he included trumpet and timpani parts. Actually, his brother Michael Haydn had written one such symphony earlier, No. 36. Though Haydn still gets credit for writing the timpani part at actual pitch with an F major key signature (instead of transposing with a C major key signature), a procedure that made sense since he limited that instrument to the tonic and dominant pitches. Many editions of the work, however, use no key signature and specify the instrument as "Timpani in B flat – F."
Five of Mozart's piano concerti are in B-flat major.
Well-known classical compositions in B-flat major 
- ^ H. C. Robbins Landon, Haydn Symphonies London: British Broadcasting Corporation (1966): 57
Scales and Keys 
||This section requires expansion. (January 2011)
Diatonic scales and keys
|The table indicates the number of sharps or flats in each scale. Minor scales are written in lower case.