Answer:
1. 7 notes
2.A single major , sometimes called dual major, is a student who completes two sets of degree specialization requirements, generally while receiving only one degree — a degree with a single major.
Explanation:
1. because The key of C contains 7 notes: C, D, E, F, G, A, B; we can mix up these notes to play melodies. If all of the your favourite pop songs were played in the key of C major, chances are they only use these 7 notes, whether it is in the melody, the chords, or the bassline.
