Root, third and seventh: the guide tones fix the quality, so the fifth is dropped. That is what leaves a string free, so pick a tension to put on top.
EmMaj9 is E, G, B, D# and F# — EmMaj7 with the ninth added on top.
It sounds the same unease with more colour over it. The ninth softens the edge without resolving anything.

| E | G | B | D# | F# |
|---|---|---|---|---|
| 1 | ♭3 | 5 | 7 | 9 |
Minor tonic — melodic minor, extended.
Also written EmM9, Em(maj9) or E-Δ9. The same chord either way; which spelling you meet depends on who wrote the chart.
Root, third and seventh. The third and seventh, the guide tones, are what make the chord major, minor or dominant, so the fifth can go: it says nothing the symbol needs.
Three notes means a spare string, which is the real point. Put a tension on it.
EmMaj9 has 4 of them, on the top four strings, the middle four strings, the bottom four strings and strings 5-3-2-1, from the 2nd fret up to the 10th — all in one inversion, so the bass note never moves. The one to learn first is the E shape at the 2nd fret, which is the easiest grip here.
Start with 021002 — no barre and 3 open strings. 2 of the 9 shapes here sit in open position. 4 of the 9 need a barre. Together they cover the neck from the 1st fret to the 14th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| 021002 | open position | E, root position | F# | 3 open strings |
| 0x4443 | open position | E, root position | G | barred |
| 222443 | 2nd fret | F#, 9th in the bass | G | barred |
| x7587x | 5th fret | E, root position | F# | all fretted |
| 0-10-9-8-7-0 | 7th fret | E, root position | F# | 2 open strings |
| 7-10-9-8-7-7 | 7th fret | B, 2nd inversion | B | barred |
| 12-10-x-11-12-11 | 10th fret | E, root position | D# | all fretted |
| 12-10-13-11-x-x | 10th fret | E, root position | F# | all fretted |
| 12-14-13-12-12-14 | 12th fret | E, root position | F# | barred |
The same notes rebuilt from scratch give 9 drop 2, 6 drop 3, 13 rootless and 6 open string voicings, each on its own page.
Tensions. A shell of EmMaj9, root, third and seventh, leaves a string free, and the tones that belong over it are the 11 (A) and the 13 (C#).
How you get to it. The turn that lands on EmMaj9 is F#m7♭5 to B7♭9: the ii and the V of E minor, which is where a minor tonic is usually arrived at rather than simply begun on.
Every note of EmMaj9 is in E harmonic minor and E melodic minor.
Change one note of EmMaj9 and you have Emaj9 (the minor third becomes a major third), Em69 (the major seventh becomes a sixth), Em9 (the major seventh becomes a flat seventh), EmMaj7 (drop the ninth), EmMaj11 (add the fourth) or Em/D# (drop the ninth).
EmMaj9 is a minor chord — root, minor third, fifth. Minor chords on every root.
On EmMaj9’s sound and use this page follows Mark Levine, The Jazz Theory Book (Sher Music, 1995). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.