1. Basic Intervals

I’m just going to start from the beginning so I don’t miss anything.

Intervals are the basic components of scales. They are pairs of notes certain distances apart.

0 half-steps = unison
1 half-step = minor second
2 half-steps = major second
3 half-steps = minor third
4 half-steps = major third
5 half-steps = perfect fourth
6 half-steps = tritone (#4th/b5th)
7 half-steps = perfect fifth
8 half-steps = minor sixth
9 half-steps = major sixth
10 half-steps = minor seventh
11 half-steps = major seventh
12 half-steps = octave