I think movement and emphasis? That’s my guess
Does this count I don't even know but I made it is it a type of art
Answer: All of the above.
Explanation: Every single artist does not have the same reason for choosing to make it.
Answer:
three tones
Triad, in music, a chord made up of three tones, called chord factors, of the diatonic scale: root, third, and fifth. The system of diatonic triads is the basis of tonal harmony in music. Triads built on the notes of the C major (and natural A minor) scale.