808 Bassline

An 808 bassline is a tuned 808 playing your song's root notes under the kick, with slides and octave jumps doing the talking. Here are five, written out in F minor at 140 BPM. Veena, the free AI DAW with a personal music producer built in, writes any of them for you: CoProducer places the 808 as MIDI you can reshape note by note.

All five run over the same four bars, one chord per bar: Fm, Eb, Db, C. That's the i–VII–VI–V descent dark trap leans on, and its roots walk down a step at a time, which is exactly what an 808 wants to slide along. The clap sits on beat 3, the half-time feel trap is built on.

In the grids, each column is a 16th note. A note name is a hit, a dash holds it, a dot is silence.

Five 808 bassline patterns in F minor

1. The root holder (808 Long)

16ths   1   e   &   a   2   e   &   a   3   e   &   a   4   e   &   a
Bar 1   F1  —   —   —   —   —   .   F1  —   —   —   .   .   .   .   .
Bar 2   Eb1 —   —   —   —   —   .   Eb1 —   —   —   .   .   .   .   .
Bar 3   Db1 —   —   —   —   —   .   Db1 —   —   —   .   .   .   .   .
Bar 4   C1  —   —   —   —   —   .   C1  —   —   —   .   .   .   C2  —

Two hits a bar: the downbeat with the kick, then the "a" of 2, ringing through the clap. Nine notes in four bars and it still feels heavy, because 808 Long's 1.2-second decay keeps every held note full to its end. The C2 at the end is an octave pickup that throws the loop back to F1.

2. The bounce (808 Short)

16ths   1   e   &   a   2   e   &   a   3   e   &   a   4   e   &   a
Bar 1   F1  .   .   F1  .   .   F2  .   .   .   F1  .   .   Eb2 .   .
Bar 2   Eb1 .   .   Eb1 .   .   Eb2 .   .   .   Eb1 .   .   Db2 .   .
Bar 3   Db1 .   .   Db1 .   .   Db2 .   .   .   Db1 .   .   C2  .   .
Bar 4   C1  .   .   C1  .   .   C2  .   .   .   C1  .   .   E1  .   .

The hits split each bar 3-3-4-3-3, a skip that bounces against straight hats. Every jump is an octave, so the line moves without leaving the chord. The last hit in bars 1 to 3 is the next chord's root an octave up, arriving three 16ths early, and bar 4 ends on E natural, the leading tone, a half step under F. 808 Short dies in 150 ms, so the gaps stay gaps.

3. The drill slide (808 Glide)

Each slide exists because two notes overlap by one 16th. The last Eb1 doesn't overlap, so it re-strikes instead of gliding. That contrast, bend then punch, is the whole drill vocabulary.

4. The octave throw (808 Glide)

At the end of bar 4, hit C1 on the "&" of 3 and hold it to beat 4. Start C2 on the "a" of 3, a 16th before C1 lets go, and hold it to the "a" of 4. The 808 climbs an octave over 150 ms, about one and a half 16ths at 140 BPM, and hangs there. Leave the last 16th empty and hit F1 on the next downbeat: no overlap, so the 808 drops back with a full re-strike. Up, hang, slam. Once every four or eight bars is plenty.

5. The melodic 808 (808 Distorted)

16ths   1   e   &   a   2   e   &   a   3   e   &   a   4   e   &   a
Bar 1   F1  —   —   —   —   —   Ab1 —   .   .   C2  —   .   .   Eb2 —
Bar 2   Eb1 —   —   —   —   —   G1  —   .   .   Bb1 —   .   .   Db2 —
Bar 3   Db1 —   —   —   —   —   F1  —   .   .   Ab1 —   .   .   C2  —
Bar 4   C1  —   —   —   —   —   E1  —   .   .   G1  —   .   .   Bb1 —

Here the 808 arpeggiates each chord's four notes, Fm7, Eb7, Dbmaj7 and C7, and becomes the hook. Beat 3 stays empty for the clap. 808 Distorted keeps everything under 80 Hz clean while the harmonics above it growl, which is what lets the higher notes read on a phone.

Tune it before you mix it

An 808 is a pitched note, and no EQ fixes a wrong one. Keep the roots between C1 (32.7 Hz) and B1 (61.7 Hz); F1 sits at 43.7 Hz, right in the pocket. Below C1 the fundamental stops reading as pitch and turns to rumble. The C1 in bar 4 is this progression's lowest note, so if it vanishes on small speakers, move to 808 Distorted or turn the DRIVE knob up.

Make the 808 bassline with CoProducer

Open daw.veena.studio, sign in with Google and paste:

Make a 140 BPM trap beat in F minor over Fm, Eb, Db and C, one chord per bar: half-time drums with the clap on beat 3 and rolling hi-hats, a dark Bell Pluck melody, and an 808 Glide bassline on the roots F1, Eb1, Db1 and C1 that hits with the kick, slides up to Ab1 inside bar 1, slides up an octave into beat 4 of bar 4 and drops back to a fresh F1 on the downbeat.

CoProducer sets 140 BPM and F minor, then orders the work itself: the drums and chords come first, because the 808 depends on them, and the bass reads their actual placed notes before it writes. You get 3 options for the 808. Hover to hear each one, press Enter on the keeper, and nothing that depends on it is written until you choose.

Veena's own synth has six 808s among its 39 presets: 808 Long, 808 Short, 808 Glide, 808 Distorted, 808 Hard and 808 Classic Kick. Swap between them and every note stays put. In Veena's own data, 83.6% of new users who ask for trap get a finished first result on day one.

Slides, drops and tails in the piano roll

Double-click the 808 clip and edit it like a producer:

• Slide: drag the end of a note past the start of the next one. The overlap is the slide; without it, notes re-strike.
• Tail: note length is the 808's length. Shorten a note to choke it, or turn DECAY for how long a held note rings, anywhere from 60 ms to 2 seconds.
• Drop: DROP sets the pitch dive at the start of every note, 0 to 24 semitones. 808 Hard dives 18 in 25 ms; 808 Glide keeps it to 7 so the slides stay the star.
• Octaves: select notes and press Ctrl or Cmd with the up or down arrow.
• Grid: 1/4 Beat snap for 16ths, 1/6 Beat for 16th-note triplets.

All five 808 basses are mono, so overlapping notes glide instead of stacking; 808 Glide takes the longest, 150 ms. Or say it in words: "shorten every 808 to an 8th in the verse", "slide into the last note of each phrase". One undo reverses any change.

Five ways an 808 line goes wrong

1. The kick and 808 both ring long. Keep the kick short, or ask CoProducer to duck the 808 under the kick.
2. Out of key. Tune every note to the chord root first.
3. Too low. Under C1 you feel mud, not notes.
4. Slides everywhere. One per phrase hits harder than one per bar.
5. Hitting on the clap. Leave beat 3 alone and the snare cracks.

Write the chords first with the chord progression generator, let the bassline generator lock the 808 to them, then put a dark trap melody on top. The rest of the beat lives on the page for how to make trap beats.