A Drop2 chord isn't a new chord — it's the same four notes in a different outfit. Take a close-position seventh chord and move its second-highest note down an octave, and you get a Drop2 voicing: guitar-friendly, spread across four adjacent strings, and the backbone of jazz comping and chord-melody playing (jazzguitar.be's breakdown of the shape is the clearest one I've found). Roberto's full Drop2 guide → covers the theory behind the shape itself. This post is the practice routine I actually give students, because knowing what a Drop2 chord is and being able to find one under pressure, in a new key, on an unfamiliar string set, are two very different skills.
Day 1–2: one chord, one string set, four inversions
Pick a single Maj7 chord — CMaj7 (C, E, G, B) is the easy starting point — and stay on one string set: the 6th–5th–4th–3rd, 5th–4th–3rd–2nd and 4th–3rd–2nd–1st sets are the three usual choices for Drop2 shapes. Work through all four inversions back to back. Each inversion puts a different chord tone — the root, the 3rd, the 5th or the 7th — on top of the voicing, so you end up with four different "top notes" for the exact same chord on the exact same four strings. Don't move on until you can name the top note of each shape before you play it, not after.
Day 3–4: same chord, new string set
Now take that identical CMaj7 and move it to a different string set. The fingerings will feel unfamiliar even though the notes haven't changed at all — that discomfort is the entire point. It forces your ear, not your muscle memory, to confirm you're still hearing a CMaj7. Guitarists call this kind of shift string transference, and it's the reason a player who only ever learned Drop2 shapes on one string set freezes the moment a tune calls for a voicing higher up the neck.
Day 5–6: turn every Maj7 into a Dominant7 for free
Here's the payoff. A Maj7 chord is spelled 1–3–5–7; a Dominant7 is spelled 1–3–5–♭7 — the only difference is the seventh, lowered by a semitone (fretjam's chord-theory breakdown walks through the full family). Because a Drop2 voicing only ever moves one finger to make that change, every Maj7 shape you drilled on Day 1–4 is already 90% of a Dominant7 shape on the same string set. Learn where the seventh sits in each inversion, drop it a fret, and you've doubled your vocabulary without learning a single new fingering.

Day 7: put it inside an actual tune
Pick a standard from a Real Book — Autumn Leaves is the forgiving first attempt, All The Things You Are the tougher next step once ii-V-I in several keys feels natural — and comp through a full chorus using only Drop2 voicings on one string set. Next chorus, move every voicing to a different string set and comp the same tune again. This is also where knowing several voicings for the same chord and paying attention to voice leading between chords start to matter more than the shapes themselves — a Drop2 grip is only as useful as the note it hands to the next chord.
For the theory behind the voicing itself, see the full Drop2 chords guide →; for how inversions work in general, or for a gentler entry point via simple jazz chords, those two posts are good next stops.
If this routine got one voicing to actually stick past the first string set, you can throw a coffee my way on Patreon — no pressure, purely for the licks. Now go find that seventh and drop it.