Play a Cmaj7 with all four notes inside one octave — C, E, G, B, bottom to top. Now find the second note down from the top. That is the G. Move it, and only it, an octave lower.
That is drop 2: G, C, E, B. The same four notes you started with, and the same note still on top. All that changed is how they are distributed in space, and the entire technique is built on the fact that the top note did not move.
Four positions, and why there are exactly four
A four-note chord in close position has four arrangements, one for each note you can put at the bottom. Drop the second voice from the top of each and you get four drop 2 voicings:
| Close position | Drop 2 | Note on top |
|---|---|---|
| C–E–G–B | G–C–E–B | B, the 7th |
| E–G–B–C | B–E–G–C | C, the root |
| G–B–C–E | C–G–B–E | E, the 3rd |
| B–C–E–G | E–B–C–G | G, the 5th |
Read the middle column downwards and notice that the note at the bottom also changes function each time — 5th, 7th, root, 3rd — because the second-from-top voice is a different note in every inversion. That is the arithmetic. What makes it useful is the third column.
You do not choose a position by its number. You choose it by which note you need on top, because that note is the melody. If the tune sits on E in one bar and on G in the next, you play the position with E on top and then the one with G on top, and those two shapes lie within a few keys of each other. Choosing by melody note keeps your hands in one region of the keyboard. Reaching for one fixed shape on every chord instead is what sends people leaping from one end of the piano to the other and concluding that the technique does not work.
The one that bites
Look again at the second row. B–E–G–C puts B at the bottom and C at the top: a minor ninth between the outer voices. That is the one interval in this set arrangers actively avoid, and it turns up whenever the melody sits on the root of a major seventh chord, in any key: the position that puts the root on top is by construction the position that sends the major seventh to the bottom.
The fix is not a cleverer voicing. It is a different chord. Arrangers building this texture treat the sixth chord as the home chord for a major tonic, not the major seventh, and the problem disappears: C6 is C–E–G–A, so a melody note of C gives the close voicing E–G–A–C, and dropping the A an octave gives A–E–G–C. Same melody note, no minor ninth, and a warmer chord underneath it.
That substitution is not a workaround invented to dodge one interval. It is why the four scales taught for this technique are built on major sixth, minor sixth, minor seventh and dominant seventh chords, and why the major seventh is not among them.
Four-way close, which is where drop 2 comes from
Drop 2 is not a piano invention and it is not really a chord. It is the second step of an arranging procedure, and the first step explains it. The version taught here is the one Mark Levine sets out in chapter 19 of The Jazz Piano Book, which is where most pianists meet it, and the rules quoted below are his.
The first step is four-way close: harmonise a scale so that every single note of it gets its own four-note chord in close position, with that note on top. Where the note is one of the home chord’s own four — root, third, fifth and sixth in the two sixth-chord forms, root, third, fifth and seventh in the minor-seventh and dominant-seventh forms — the home chord goes underneath it. On the remaining degrees of that scale, a diminished seventh chord does.
Over a C-based scale those diminished tones are D, F, A♭ and B. Now spell a G7♭9 and take away its root. What remains is D, F, A♭, B. The diminished chord is a rootless dominant seventh flat nine, and G7 is the V of C. So what the ear follows as the melody moves stepwise is not chord, tension, chord. It is the home chord alternating with its own dominant, once per note.
Two details keep that alternation honest. Each of the four scales needs one inserted chromatic passing tone so the same chord quality never lands twice in a row, and the insertion point is not the same for all of them: a G♯ between G and A for the major-sixth and minor-sixth forms, a B natural for the minor-seventh and dominant-seventh forms. Learn them as four separate scales rather than one rule with exceptions.
Only now does drop 2 arrive: take the four-way-close chord and move its second-from-top voice down an octave, into the left hand. Three notes above, one below, both hands moving in the same rhythm as the melody.
Why pianists split it between the hands
On a guitar drop 2 is a shape under the fingers, and that is largely why guitarists learn it early. On a piano the four positions span between a minor ninth and a major tenth, so the standard texture puts three notes in the right hand and the dropped note alone in the left.
Take the C6 four-way-close chord carrying C in the melody: an A, a G and an E underneath it, all sitting in the octave below middle C. The A is second from the top. Send it down an octave and the left hand takes an A low in the bass clef while the right keeps the other three. One note moved, and the chord went from something a horn section plays to something two hands play.
The left hand is worth more attention than it usually gets, because that dropped line mostly runs about a tenth below the melody and is therefore a melody of its own. A useful practice exaggeration is to play it much louder than the right hand, or to play it legato while the right-hand chords are short, until you can hear it as a line rather than as the bottom of a chord.
When to reach for it, and when not to
Levine’s stated trigger is stepwise melodic motion. That is a selection rule, not a limit: four-way close assigns a voicing to every degree of the scale, so a melody that leaps still has a chord waiting for it. What you lose across a leap is the fluency — the voicings are further apart, the inner voices stop sliding by step, and the passage sounds arranged rather than sung. Over a line that walks, the whole texture moves as one thickened voice, which is the effect the technique exists for.
Two cautions come from the same chapter, and both are about restraint. Use drop 2 sparingly when you are comping behind someone, because a full two-handed chord under every note will bury a soloist rather than support them. And it belongs to repertoire built on ii-V-I motion; on tunes that are not, it can sound imported. “Maiden Voyage” and George Cables’s “Think On Me” are the two named examples of tunes where it does not fit.
The family it belongs to
Drop 2 is one texture inside block-chord playing, which is the broader idea of both hands harmonising a line and moving in the same rhythm as one thickened voice. The same idea supports very different sounds. Bill Evans’s version is thin — a single right-hand note over a four-note left-hand voicing. George Shearing’s leaves the four-way-close chord intact above and doubles the melody an octave lower beneath it, five notes in total. Red Garland’s is thick, two-handed, seven or eight notes at a time; his solo on “Billy Boy”, from Miles Davis’s Milestones, is the recording people are usually pointed at first. Drop 2, at three notes plus one, sits between them.
If you want to see the procedure rather than the style, the opening bar of “Polka Dots and Moonbeams” is the worked example: five melody notes, five drop 2 voicings, one under each.
What to practise
Play the four four-way-close scales — major sixth, minor sixth, minor seventh, dominant seventh — first from the page and then from memory. Then play the drop 2 of each the same way. Then open a tune you know well, find the passage where the melody walks by step, and harmonise that passage only.
That last instruction is the one people skip, and it is where the technique stops being an exercise. Drop 2 is not a sound you apply to a whole chorus. It is a sound for the moment the melody starts to walk.
Questions people actually ask
- Is a drop 2 voicing just an inversion?
- No, though they are easy to confuse because both re-arrange the same four notes. An inversion changes which note is at the bottom, and in doing so it usually changes which note is at the top as well. Drop 2 leaves the top note exactly where it was and moves one inner voice down an octave. That is the difference that matters in practice: an inversion can take your melody note away from you, and a drop 2 never can.
- Which of the four drop 2 positions should I play?
- The one whose top note is the note of the melody you are harmonising. That is the whole selection rule, and it is why the four positions exist rather than one being the correct one. If the tune sits on the third of the chord, you want the position with the third on top; a bar later, on the fifth, you want the position with the fifth on top. Choosing by melody note also keeps your hands in one region of the keyboard instead of leaping.
- Why does drop 2 sound wrong on some major chords?
- Almost always because of one interval. When the melody lands on the root of a major seventh chord, the drop 2 that carries it puts the major seventh a minor ninth below that root, and a minor ninth between the lowest and the highest voice reads as a mistake rather than a colour. The standard fix is not a different voicing of the same chord, it is a different chord: use the major sixth instead of the major seventh, which is what arrangers writing this texture do by default.