Jazz-rock crossover is the territory where two languages share an idiom. The drummers behind Steely Dan, Donald Fagen's solo records, the early-period Toto records, and the Snarky Puppy / Vulfpeck side of modern fusion all live in this zone. The hands aren't playing pure rock 8ths — they're playing rock 8ths that have been listening to jazz for ten years. The backbeat is firm; the 8ths are slightly relaxed (almost-but-not-quite swung); the ride pattern shows up for a bar at the bridge to add colour; and the snare comments between the backbeats with the kind of figures a jazz drummer would call "comping".
This is what people mean by feel. The notation looks like a basic 8th-note rock groove, but a Steely Dan record sounds nothing like a basic 8th-note rock groove because the drummer has been informed by Elvin Jones, Tony Williams, and Bernard Purdie before he ever played a backbeat.
The Push
The defining trick is what New York studio drummers call "the push": the &-of-each-beat is played a hair late, almost-but-not-quite triplet-y. It's not full swing — that would sound like a shuffle. It's a slight delay that creates lift. Aim for somewhere between a 50/50 division and a 60/40 division; the more pop the song is, the closer to 50/50; the more jazz-leaning, the closer to 60/40.
Exercises
The notation is a plain 8th-note backbeat; the exercise is the &-placement. Aim for about a 55/45 division — no longer dead-straight, not yet a swing 8th. Listen back once: if it reads as sloppy rock, the push is too wide; if it reads robotic, it isn't there.
A pure jazz bar — ride pattern, foot-hat on 2 and 4, snare pickup on the &-of-4. Run it as a transition: three bars of Exercise 1, one bar of this, back again. The pulse must be unbroken — a metronome should not flinch at the boundary.
Backbeat on 2 and 4 (loud, marked with the accent) plus comping snare on the &-of-1 and &-of-3 (soft, ghost-volume). The comping notes are jazz vocabulary — they fill the space between the backbeats with a quiet conversational layer. The trick is the dynamic: backbeat is at the front of the mix; comping notes are at the back. If they get equal volume, you've lost the pop sensibility and turned it into something else.
The canonical "Steely Dan" bar. Backbeat on 2 and 4. A comping snare on the &-of-2 (lifts into beat 3). A comping snare on the &-of-3 (anticipates the next backbeat). Kick on 1 plus a syncopated &-of-2 push. Push the 8ths slightly late. The whole bar should feel casual — like the drummer is half-asleep but hitting everything dead-centre. That's the Steely Dan trick: looseness up top, ironclad pulse underneath.