F major
 |
|
| Relative key | D minor |
|---|---|
| Parallel key | F minor |
| Dominant key | C major |
| Subdominant | B♭ major |
| Component pitches | |
| F, G, A, B♭, C, D, E, F | |
F major (or the key of F) is a major scale based on F, with the pitches F, G, A, B♭, C, D, and E. Its key signature has one flat, B♭.
F major's relative minor is D minor, and its parallel minor is F minor.
F major is the home key of the English horn, the basset horn, the horn in F, the trumpet in F and the bass Wagner tuba. Thus, music in F major for these transposing instruments is written in C major. Most of these sound a perfect fifth lower than written, with the exception of the trumpet in F which sounds a fourth higher. (The basset horn also often sounds an octave and a fifth lower.)
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Wikipedia