Major 9th Chords... maj9
maj7 with an added 9th
- Major 9th chords are 5-note chords spanning 14 semitones - octave plus a major second or 2 semitones.
- Written as maj9 or ⃤ 9 with maj9 most commonly used.
- They are called compound intervals as they span more than an octave.
- Intervals: root, major third, perfect fifth, major 7th, major 9th.
- Chord formula: 1 - 3 - 5 - 7 - 9
Example: Calculating a Gmaj9 chord
- major 9th chords consist of the 1st, 3rd, 5th, 7th and 9th notes of the major scale.
- G chords are based on the scale of G major which consists of 1 sharp... F#. Because a 9th chord exceeds one octave, we need to add an extra note to the existing one-octave scale (9 notes in total).
The scale reads as follows: G - A - B - C - D - E - F# - G - A
- Formula = 1 - 3 - 5 - 7 - 9
- Substitute notes from the scale into the formula
- The Gmaj9 chord chord = G - B - D - F# - A
Major 9th Chords - Right Handers
Major 9th Chords - Left Handers
Don't confuse a 9 chord with a maj9 chord. A ninth chord is built on a dominant or flattened 7th chord, whereas a major 9th chord is built on a major 7th chord.
- Formula for a 9 chord: 1 - 3 - 5 - ♭7 - 9 (dom 7th chord with an added 9th)
- Formula for a maj9 chord: 1 - 3 - 5 - 7 - 9 (maj 7th chord with an added 9th)