An open string left ringing against a fretted grip. Because it costs no finger, it sounds a note the closed shape has none left for -- a tension on top, or a pedal root underneath. Either a familiar grip with open strings added, or a shape so sparse the open strings carry the chord. These belong to their key rather than to a shape, so D, A, G and E have many and Eb a handful.
Ebmaj7#5 is Eb, G, B and D — Ebmaj7 with the fifth raised a semitone.
It sounds weightless, with no pull in it. Unlike an aug7 there is no flat seventh dragging it anywhere, so it colours a tonic rather than replacing it with a dominant.

| Eb | G | B | D |
|---|---|---|---|
| 1 | 3 | ♯5 | 7 |
Tonic — the lydian augmented sound.
Also written EbM7#5, EbΔ7#5, Eb+M7 or Ebmaj7(#5). The same chord either way; which spelling you meet depends on who wrote the chart.
An open string left ringing against a fretted grip. It costs no finger, so it can sound a note the closed shape has none left for: a tension on top, or a pedal root underneath.
These belong to their key rather than to a shape: they cannot be moved up the neck. D, A, G and E have many; E♭ has a handful.
Ebmaj7#5 has 6 of them, on the top four strings, strings 6-5-4-3-2, the bottom four strings, the middle four strings and strings 6-4-3-2, from the 2nd fret up to the 6th — every inversion the chord has: G in the bass, B in the bass and D in the bass. The one to learn first is the B shape at the 2nd fret, which is the easiest grip here.
Start with xx1433 — no barre and down at the nut. None of the shapes for Ebmaj7#5 uses an open string, so every one of them is movable; the lowest sits at the 1st fret. 1 of the 7 needs a barre. Together they cover the neck from the 1st fret to the 13th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| xx1433 | 1st fret | Eb, root position | G | all fretted |
| x65433 | 3rd fret | Eb, root position | G | all fretted |
| x657x7 | 5th fret | Eb, root position | B | all fretted |
| x6978x | 6th fret | Eb, root position | G | all fretted |
| x-x-9-8-8-10 | 8th fret | B, 2nd inversion | D | all fretted |
| x-x-13-12-12-10 | 10th fret | Eb, root position | D | all fretted |
| 11-x-12-12-12-11 | 11th fret | Eb, root position | Eb | barred |
The same notes rebuilt from scratch give 3 shell, 13 drop 2 and 8 drop 3 voicings, each on its own page.
Tensions. A shell of Ebmaj7#5, root, third and seventh, leaves a string free, and the tones that belong over it are the 9 (F), the #11 (A) and the 13 (C).
How you get to it. The turn that lands on Ebmaj7#5 is Fm7 to Bb7 — the ii and the V of Eb — and Bb7 shares its third and seventh with Fm7, so the hand barely moves between them.
Change one note of Ebmaj7#5 and you have Ebmaj7 (the sharp fifth becomes a fifth), Ebmaj7b5 (the sharp fifth becomes a flat fifth), Ebaug (drop the major seventh) or Ebaug7 (the major seventh becomes a flat seventh).
Ebmaj7#5 is a major chord — root, major third, fifth. Major chords on every root.
On Ebmaj7#5’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.