A Major Ninth
Piano chord — 5 notes
A
Major Ninth
Root Position: A – C# – E – G# – B
Bass note: A
RootChord tone
All Voicings — A Major Ninth
Root PositionA – C# – E – G# – B(bass: A)
1st InversionC# – E – G# – B – A(bass: C#)
2nd InversionE – G# – B – A – C#(bass: E)
3rd InversionG# – B – A – C# – E(bass: G#)
4th InversionB – A – C# – E – G#(bass: B)
A Major Ninth Piano Chord — Notes and Inversions
Notes: A, C#, E, G#, B
Intervals: 1P, 3M, 5P, 7M, 9M
Number of notes: 5
Also known as: maj9, Δ9, ^9
The A Major Ninth chord contains 5 notes (A, C#, E, G#, B). This chord has 4 inversions in addition to the root position. Use the interactive piano keyboard above to explore each voicing.