A Major 7th sharp 11th chords A Major 7#11 on a piano Formula: 1-3-5-7-#11 Notes: A-C#-E-G#-D# chord suffix: AMaj7#11 Use these charts to create your own AMaj7#11 chord or play a AMaj7#11 melody. A Major 7#11 on a pianoA Major 7th sharp 11th chord on a guitar