The F major scale starts and ends on the note F, and it contains a Bb note instead of a B note. Play the F major scale below and listen for the Do Re Mi Fa So La Ti Do sound. The F major scale is shown using the key signature of F major which is indicated by the Bb symbol placed after the treble clef. The number underneath each note indicates its position in the scale. These numbers are called scale degrees. The names of the first and last notes of a major scale are always the same.