Major sixth interval

Major sixth in musical notationThe major sixth interval consists of two notes with nine semi-steps distance. For example, C to A note will result in this musical interval.

The major sixth interval is abbreviated M6 (an alternate spelling is diminished seventh). Related is the minor sixth, which is abbreviated m6
Keyboard major sixth interval 
A major sixth C to A on the keyboard.

Listen to major sixth interval (C-A):

This interval is present in the 6th chord. For example, C6 consisting of the notes C, E, G, A. It is actually present in the minor 6th chord as well: Cm6 consists of the notes C, Eb, G, A. Notice that the 13th interval represent the same note, but on a higher octave. For example, C13 consisting of the notes C, E, G, Bb, D, F, A.

To being able to distinguish an interval by ear, a good idea is to think about a familiar song which beginning notes matching it. An example (ascending) is the lullaby "Hush, Little Baby".

Ascending major sixth intervals

A list with ascending major sixth intervals:

Inversions of these intervals will result in minor thirds.

Descending major sixth intervals

A list with descending major sixth intervals: