Intervals map from one note
 Minor second, b2 |
 Major second, 2 |
 Minor third, b3 |
 Major third, 3 |
 Perfect fourth, 4 |
 Augmented fourth or diminished fifth, #4 or b5 |
 Perfect fifth, 5 |
 Augmented fifth or minor sixth, #5 or b6 |
 Major sixth, 6 |
 Minor seventh, b7 |
 Major seventh, 7 |
 Perfect octave, 8 |