Major 6th (6)

Alternative to Maj7

Prove it — just do the practice exercise.
C6 Root Position
C (R)E (3)G (5)A (6)
The 6th chord replaces the seventh with a sixth:

• R – 3 – 5 – 6

Sounds brighter and more open than Maj7. Often used as a tonic chord in older jazz standards.

Example: C6 = C + E + G + A