
Boom bap
Boom bap sits at 85–95 BPM with swung, sample-led drums and deliberate space between hits for the words to land.
Drums and bass first, everything else in service of the pocket.
In short
In hip hop the rhythm section is the composition. The kick and snare define the pocket, the bass locks to the kick, and everything else is arranged around leaving room for a voice. Even instrumentals inherit that shape, which is why hip hop beds tend to have a conspicuously empty midrange. Subgenre is mostly a drum decision: boom bap uses a hard, sampled-feeling backbeat around 85–95 BPM; trap uses skittering hi-hat triplets and long 808 slides at 130–150 in half-time; drill uses sliding 808s and a darker tonality. Naming the drum treatment gets you closer than naming the era. Swing matters — perfectly quantised hip hop sounds stiff, and asking for a slight push or drag is usually the difference between a beat that moves and one that just plays.
The rhythm section is the composition, and the midrange is deliberately empty because that is where a voice goes. Subgenre is a drum decision more than an era: boom bap is a hard sampled backbeat at 85–95, trap is hi-hat triplets and long 808 slides at 130–150 felt in half-time, drill uses sliding 808s and a darker tonality. Ask for slight swing — perfectly quantised hip hop sounds like a demo.
The specific ways a prompt in this genre produces something generic.
Naming an era instead of the drum treatment
Leaving the midrange full when you intend to rap over it
Producing a stiff, mechanical pocket
Asking for trap at 140 without specifying half-time




Inside the genre
Subgenres are mostly rhythm-section decisions, not eras.

Boom bap sits at 85–95 BPM with swung, sample-led drums and deliberate space between hits for the words to land.

Trap runs 130–150 BPM felt as half time, built on rolling hi-hats and 808s that glide between notes rather than restrike.

Drill sits near 140 with sliding 808s and off-grid hats, and its menace comes from sparseness rather than from density.
Who uses it

Beats at a stated BPM to write bars against, without waiting on a producer or clearing a sample.

Instrumentals with the midrange left open, so a voice sits over them cleanly.

A starting arrangement to rebuild with your own drums and sample choices.

Punchy loops that hook in the first bar and repeat cleanly under a vertical video.
Boom bap instrumental, 90 BPM, C minor. Hard sampled drums with slight swing, dusty jazz piano loop, upright bass, vinyl noise. Midrange left open for a vocal. Instrumental.
Related
More genres
Twelve genres, each with its own tempo map, instrument bench and a prompt that already works.
From the library
This is the busiest naming cluster on the site: hip hop beat maker, rap beat maker, trap beat maker, drill beat maker, ai beat generator, boom bap maker. All of them want an instrumental with drums, bass and a hook you can rap over. The subgenre words are tempo instructions in disguise — boom bap 85 to 95 BPM, trap 130 to 150 felt as half time, drill near 140 with sliding 808s. The dedicated AI beat maker page covers the whole cluster in depth.
The performer
Boom bap sits at 85 to 95 BPM, trap at 130 to 150 felt as half time, and drill near 140. Naming the subgenre without the tempo leaves the model guessing.
Name the tempo, the drum character and the melodic source. 'Dusty swung break, filtered soul piano, upright bass, 92 BPM' produces boom bap; the same tempo with 808s and hi-hat rolls does not.
Trap uses rolling hi-hats and 808s that glide between notes; drill sits slightly slower in feel, with sliding 808s, off-grid hats and a sparser, more menacing arrangement.
The lag. Both the drums and the vocal delivery sit behind the beat, and that timing is the whole era — more than any particular sample choice.
That is what most people use them for. Ask for no lead melody in the vocal range so nothing competes with your voice in the midrange.
No. Nothing is lifted from an existing recording, so there is no sample to clear — which is the practical difference from building a beat around a loop you found.
Drums and bass first, everything else in service of the pocket.