Simplify the following text for a Grade 4 native English-speaking person.
Original: F major ( or the key of F ) is a musical major scale based on F , consisting of the pitches F , G , A , ( ( Bâ ( musical note ) B ) ) , C , D , and E. Its key signature has one flat ( see below : Scales and keys ) .
Simplified: F major ( or the key of F ) is a musical major scale starting on F. Its key signature has one flat .