Gb major ninth chord
Gbmaj9 chord for piano with keyboard diagram.
Explanation: The Gb major ninth is a five note chord and can be regarded as a Gbmaj7 with an added ninth. It is often abbreviated as Gbmaj9 (should not be confused with Gb9).
Theory: The Gbmaj9 chord is constructed with a root, a major third, a perfect fifth, a major seventh and a major ninth.
Notes: Gb - Bb - Db - F - Ab