Minor 6th (m6)

Minor + major 6th

Prove it — just do the practice exercise.
Am6 Root Position
A (R)C (♭3)E (5)Gb (6)
The m6 combines minor 3rd with major 6th:

• R – ♭3 – 5 – 6

Common as minor tonic. The 6th gives the chord a special color.

Example: Am6 = A + C + E + F#