Sagot :
Answer:
1. 7 Notes
2. C or Do
Explanation:
1. 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 favorite 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.
2. C or Do is the first note of the C major scale, the third note of the A minor scale (the relative minor of C major), and the fourth note (F, A, B, C) of the Guidonian hand, commonly pitched around 261.63 Hz.