Intervals come in a variety of sizes:
Primes, seconds, thirds, fourths, fifths, sixths, sevenths, and octaves
2nd, 3rds, 6ths, 7ths, are either…
Major or Minor
Primes, 4ths, 5ths, and Octaves are…
Perfect
When a major is raised by a 1/2 step, it becomes…
augmented
When a major is lowered by a 1/2 step, it becomes…
minor
When a major is lowered by 2 1/2 step, it becomes…
diminished
When a minor is raised by a 1/2 step, it becomes…
major
When a minor is raised by 2 1/2 step, it becomes…
augmented
When a minor is lowered by a 1/2 step, it becomes…
diminished
When a perfect is raised by a 1/2 step, it becomes…
augmented
When a perfect is lowered by a 1/2 step, it becomes…
diminished
Diatonic
“fits in the key”; perfect
Melodic
two notes sounding successively
Harmonic
two notes stacked one on top of the other (sounding simultaneously)
Chromatic
Augmented, major, minor
Sharps…
FCGDAEB
Flats…
BEADGCF