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.
Dmaj7#5 is D, F#, A# and C# — Dmaj7 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.

| D | F# | A# | C# |
|---|---|---|---|
| 1 | 3 | ♯5 | 7 |
Tonic — the lydian augmented sound.
Also written DM7#5, DΔ7#5, D+M7 or Dmaj7(#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.
Dmaj7#5 has 2 of them, on strings 5-4-3-2-1 and strings 6-4-3-2-1, all of them at the 3rd fret — every inversion the chord has: A# in the bass and C# in the bass. The one to learn first is the C# shape at the 3rd fret, which is the easiest grip here.
Start with xx0322 — no barre and 1 open string. 1 of the 9 shapes here sits in open position. 1 of the 9 needs a barre. Together they cover the neck from the 2nd fret to the 15th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| xx0322 | open position | D, root position | F# | 1 open string |
| x54322 | 2nd fret | D, root position | F# | all fretted |
| x50676 | 5th fret | D, root position | A# | 1 open string |
| x5867x | 5th fret | D, root position | F# | all fretted |
| xx8779 | 7th fret | A#, 2nd inversion | C# | all fretted |
| x-x-0-11-11-9 | 9th fret | D, root position | C# | 1 open string |
| x-x-12-11-11-9 | 9th fret | D, root position | C# | all fretted |
| 10-x-11-11-11-10 | 10th fret | D, root position | D | barred |
| x-x-12-15-14-14 | 12th fret | D, root position | F# | all fretted |
The same notes rebuilt from scratch give 3 shell, 13 drop 2 and 9 drop 3 voicings, each on its own page.
Tensions. A shell of Dmaj7#5, root, third and seventh, leaves a string free, and the tones that belong over it are the 9 (E), the #11 (G#) and the 13 (B).
How you get to it. The turn that lands on Dmaj7#5 is Em7 to A7 — the ii and the V of D — and A7 shares its third and seventh with Em7, so the hand barely moves between them.
Change one note of Dmaj7#5 and you have Dmaj7 (the sharp fifth becomes a fifth), Dmaj7b5 (the sharp fifth becomes a flat fifth), Daug (drop the major seventh), Daug7 (the major seventh becomes a flat seventh) or D/Bb (the major seventh becomes a fifth).
Dmaj7#5 is a major chord — root, major third, fifth. Major chords on every root.
On Dmaj7#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.