Sound credits
Last updated: 25 October 2026 · licences checked on 24 October 2026
The sampled kits and the grooves of the Beat Maker are built from free-licence material only. This page lists, for every published file, where it comes from and under which licence. Every sound is CC0 (public domain dedication: no attribution required, credited here anyway); the grooves are CC BY 4.0 and their credit below is mandatory.
The two Synth kits (808 and 909) are synthesized live in your browser and use no recording.
Drum grooves — Groove MIDI Dataset (CC BY 4.0) CC BY 4.0
Drum grooves adapted from the Groove MIDI Dataset by Google LLC (Magenta), licensed under CC BY 4.0. Changes: excerpted to 2 bars, quantized to a 16th-note (or triplet) grid, velocities reduced to 4 levels, drums mapped to 8 tracks.
Source: Groove MIDI Dataset — Google LLC (Magenta). Licence: Creative Commons Attribution 4.0 International (CC BY 4.0).
Reference publication: Jon Gillick, Adam Roberts, Jesse Engel, Douglas Eck, and David Bamman. "Learning to Groove with Inverse Sequence Transformations." International Conference on Machine Learning (ICML), 2019.
The 12 grooves and their source files
- Rock · 100 BPM · straight grid (16 steps per bar) · bars 1–2 of 4 · drummer3
drummer3/session2/11_rock_100_beat_4-4.mid· CC BY 4.0 - Funk · 105 BPM · straight grid (16 steps per bar) · bars 3–4 of 16 · drummer7
drummer7/eval_session/2_funk-groove2_105_beat_4-4.mid· CC BY 4.0 - Hip-hop / boom bap · 86 BPM · straight grid (16 steps per bar) · bars 2–3 of 76 · drummer8
drummer8/session2/9_hiphop_86_beat_4-4.mid· CC BY 4.0 - Soul · 80 BPM · straight grid (16 steps per bar) · bars 1–2 of 16 · drummer8
drummer8/eval_session/4_soul-groove4_80_beat_4-4.mid· CC BY 4.0 - Jazz (swing) · 102 BPM · triplet grid (12 steps per bar) · bars 50–51 of 78 · drummer1
drummer1/session1/47_jazz_102_beat_4-4.mid· CC BY 4.0 - Latin · 118 BPM · triplet grid (12 steps per bar) · bars 20–21 of 74 · drummer8
drummer8/session1/12_latin_118_beat_4-4.mid· CC BY 4.0 - Afro-Cuban · 105 BPM · straight grid (16 steps per bar) · bars 48–49 of 59 · drummer1
drummer1/session1/183_afrocuban_105_beat_4-4.mid· CC BY 4.0 - Afrobeat · 85 BPM · straight grid (16 steps per bar) · bars 14–15 of 80 · drummer8
drummer8/session2/17_afrobeat_85_beat_4-4.mid· CC BY 4.0 - Reggae · 64 BPM · straight grid (16 steps per bar) · bars 7–8 of 30 · drummer1
drummer1/session1/201_reggae-slow_64_beat_4-4.mid· CC BY 4.0 - New Orleans (second line) · 104 BPM · straight grid (16 steps per bar) · bars 3–4 of 57 · drummer5
drummer5/session2/9_neworleans-shuffle_104_beat_4-4.mid· CC BY 4.0 - Pop · 138 BPM · straight grid (16 steps per bar) · bars 3–4 of 16 · drummer7
drummer7/eval_session/7_pop-groove7_138_beat_4-4.mid· CC BY 4.0 - Dance / disco · 120 BPM · straight grid (16 steps per bar) · bars 27–28 of 29 · drummer1
drummer1/session3/7_dance-disco_120_beat_4-4.mid· CC BY 4.0
Sounds of the sampled kits (CC0 1.0) CC0 1.0
77 audio files in 7 kits. Each sound was edited for the Beat Maker: mixed to mono, leading silence trimmed, filtered (and lightly saturated in some kits), shortened with a fade-out, peak-normalized and encoded as FLAC 44.1 kHz / 16-bit. CC0 requires no credit; the authors are named out of courtesy.
Acoustic
- kick.flac · Kickk_vl8_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
k_vl8_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - snare.flac · Snaresn_center_vl8_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
sn_center_vl8_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
sn_center_vl8_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - clap.flac · Claphandclap_vl2_rr1.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0
- chh.flac · Hi-hatht_cl_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
ht_cl_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - ohh.flac · Open hatht_open_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
ht_open_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - perc.flac · Perc — Rim (side-stick) (default)sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - tom.flac · Tomt14_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
t14_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - crash.flac · Crashcr_vl4_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
cr_vl4_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - perc-shaker.flac · Perc — ShakerLShaker_Hit_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- perc-cowbell.flac · Perc — Cowbellcowbell_vl8_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc-conga.flac · Perc — CongaConga_HitN_v3_rr1_Sum.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
Boom Bap
- kick.flac · Kickmarching_kick_vl10_rr1_beater.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
marching_kick_vl10_rr1_reso.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0 - snare.flac · Snaresnare_hit_vl10_rr1_top.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
snare_hit_vl10_rr1_btm.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
snare_hit_vl10_rr1_top.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0 - clap.flac · ClapClap_rr1.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- chh.flac · Hi-hathh_closed_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- ohh.flac · Open hathh_open_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc.flac · Perc — Rim (side-stick) (default)sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - tom.flac · Tomtom_mhi_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- crash.flac · Crashcrash_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc-shaker.flac · Perc — ShakerMid_ShakerHighFaster_Up_rr1.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- perc-cowbell.flac · Perc — Cowbellcowbell_vl8_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc-conga.flac · Perc — CongaConga_HitN_v3_rr1_Sum.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
Lo-fi
- kick.flac · Kickcajon_kick_vl10_rr1_front.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
cajon_kick_vl10_rr1_rear.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0 - snare.flac · Snaresnare_hit_vl10_rr1_top.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
snare_hit_vl10_rr1_top.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0 - clap.flac · Clap — Snapsnap_r_rr1.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0
- chh.flac · Hi-hathh_tight_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- ohh.flac · Open hathh_open_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc.flac · Perc — Shaker (default)LShaker_Hit_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- tom.flac · Tomtom_floor_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- crash.flac · Crash — Rideride_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc-rim.flac · Perc — Rim (side-stick)sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - perc-cowbell.flac · Perc — Cowbellcowbell_vl8_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc-conga.flac · Perc — CongaConga_HitN_v3_rr1_Sum.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
Afro / Latin
- kick.flac · Kickcajon_kick_vl10_rr1_front.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
cajon_kick_vl10_rr1_rear.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0 - snare.flac · Snare — Djembe (slap)djembe_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- clap.flac · ClapClap_rr1.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- chh.flac · Hi-hat — CabasaCabasa1_Hit_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- ohh.flac · Open hat — TambourineTamb1_Hit_v2_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- perc.flac · Perc — Conga (default)Conga_HitN_v3_rr1_Sum.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- tom.flac · Tom — BongoBongoH_Hit1_v3_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- crash.flac · Crashcrash_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc-rim.flac · Perc — ClavesClaves1_Hit_v3_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- perc-shaker.flac · Perc — ShakerLShaker_Hit_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- perc-cowbell.flac · Perc — CowbellCowbell1_Hit_v3_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
Trap
- kick.flac · Kick — 808boom.wav — Snapper4298, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- snare.flac · SnareDubstep Snare 1.wav — Adriak909, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- clap.flac · Claphandclap_vl2_rr1.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0
handclap_vl2_rr3.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0
handclap_vl2_rr2.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0 - chh.flac · Hi-hatHi-Hat Closed Hit 01 — TheEndOfACycle, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- ohh.flac · Open hatHi-Hat Closing Hit — TheEndOfACycle, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- perc.flac · Perc — Rim (default)sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
- tom.flac · Tom — 808 tomboom.wav — Snapper4298, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- crash.flac · Crashcr_vl4_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
cr_vl4_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - perc-shaker.flac · Perc — ShakerLShaker_Hit_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- perc-cowbell.flac · Perc — CowbellCowbell.wav — Neotone, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- perc-conga.flac · Perc — CongaConga_HitN_v3_rr1_Sum.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
House
- kick.flac · Kickbd_mehackit.flac — hullum, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- snare.flac · Snaresn_generic.flac — hullum, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- clap.flac · ClapClap_rr1.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
handclap_vl2_rr4.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0 - chh.flac · Hi-hatElectronic Closed High Hat #2 — IanStarGem, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- ohh.flac · Open hathh_open_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0
- perc.flac · Perc — Shaker (default)LShaker_Hit_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- tom.flac · Tomt18_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
t18_vl5_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - crash.flac · Crashcr_vl4_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
cr_vl4_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - perc-rim.flac · Perc — Rimsn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
- perc-cowbell.flac · Perc — CowbellCowbell.wav — Neotone, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- perc-conga.flac · Perc — CongaConga_HitN_v3_rr1_Sum.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
Techno
- kick.flac · Kickboom.wav — Snapper4298, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
k_vl8_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0 - snare.flac · SnareFutureJazzStep_Snare.wav — Dolfeus, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- clap.flac · Claphandclap_vl2_rr2.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0
handclap_vl2_rr4.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0
handclap_vl2_rr1.wav — sfzinstruments (body_percussion repository contributors), Body Percussion (sfzinstruments) · CC0 1.0 - chh.flac · Hi-hatHiHat Closed RAW-03 Gate EQ.wav — cabled_mess, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- ohh.flac · Open hatElectronic Closed High Hat #1 — IanStarGem, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
hh_open_vl10_rr1.wav — Karoryfer Samples, Swirly Drums (Karoryfer Samples) · CC0 1.0 - perc.flac · Perc — Metallic rim (default)sn_ss_vl3_rr1.flac — Karoryfer Samples, Big Rusty Drums (Karoryfer Samples) · CC0 1.0
- tom.flac · Tom — Synth tomboom.wav — Snapper4298, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- crash.flac · Crash — Ride22'' ride hit 2.aif — trivialAccapella, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- perc-shaker.flac · Perc — ShakerLShaker_Hit_rr1_Mid.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
- perc-cowbell.flac · Perc — CowbellCowbell.wav — Neotone, Freesound (via the Sonic Pi sample library) (via Sonic Pi) · CC0 1.0
- perc-conga.flac · Perc — CongaConga_HitN_v3_rr1_Sum.wav — Versilian Studios (VCSL), VCSL — Versilian Community Sample Library · CC0 1.0
Authors and collections
- Big Rusty Drums (Karoryfer Samples): Karoryfer Samples
- Body Percussion (sfzinstruments): sfzinstruments (body_percussion repository contributors)
- Freesound (via the Sonic Pi sample library): Adriak909, cabled_mess, Dolfeus, hullum, IanStarGem, Neotone, Snapper4298, TheEndOfACycle, trivialAccapella
- Swirly Drums (Karoryfer Samples): Karoryfer Samples
- VCSL — Versilian Community Sample Library: Versilian Studios (VCSL)