# Free synth bass samples > Free synth bass one-shots and loops, from acid squelches to analogue plucks and house bass stabs, with root notes where known and a licence verdict. 13 samples from 1 sources (Openverse 13), updated 2026-10-23. Picked from a live search and refreshed daily. - Same search in the browser: https://sound.shep.bot/search?q=synth+bass&category=bass - Same search over the API: `curl "https://sound.shep.bot/v1/search?q=synth+bass&category=bass"` - Details, files and the credit line: `GET https://sound.shep.bot/v1/samples/{id}` with an id from the table below. - Licence verdicts: "Commercial use OK" (with or without credit) is cleared for a release; anything else must be checked or is non-commercial. See https://sound.shep.bot/docs/licences.md ## Basses from synthesizers Synth basses come in many shapes: round Moog-style tones in funk and disco, punchy square-wave stabs in house, resonant 303 acid lines, FM basses in 1980s pop and gritty saw basses in electro. Samples of single notes are useful when you don't own the synth, and loops give you a ready-made groove to chop. ## Picking and pitching Root notes matter more for bass than for any other sample. Check the note on the card, or play the sample against a reference tone, before you map it. Short, plucky basses stay in tune across a wider range than sustained ones. Layer a sine sub under a bright synth bass if the low end needs more weight, and keep both in mono below about 120 Hz. Free bass samples come from vintage-synth sample sites, Creative Commons archives and producers' giveaway packs, each with its own licence. The verdict on each card says which you can release with. ## Samples | Sample | id | What | Source | Licence | Commercial use | Direct download | | --- | --- | --- | --- | --- | --- | --- | | [Synth/bass Short or Intro](https://freesound.org/people/griffon_designs/sounds/321045) | `openverse:8c63e267-7389-440e-91a1-434a385306a3` | Bass, 1:13 | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0207.wav](https://freesound.org/people/zgump/sounds/73553) | `openverse:507e7398-1a1e-4f6d-ac18-5b78dbbed98c` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0104.wav](https://freesound.org/people/zgump/sounds/73002) | `openverse:58333d06-da9e-4288-8ab3-5b9a5d4c196b` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0106.wav](https://freesound.org/people/zgump/sounds/73004) | `openverse:77273d8c-25c3-498d-af25-b74982cca702` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0206.wav](https://freesound.org/people/zgump/sounds/73552) | `openverse:7cb3fe3e-c631-4314-abea-02afdda320aa` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0101.wav](https://freesound.org/people/zgump/sounds/72999) | `openverse:315028b7-0f07-44f4-abfd-9254e507f879` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [Thick Muted Synth Bass](https://freesound.org/people/ani_music/sounds/165314) | `openverse:d5b7a9af-5066-45b0-b8ed-d64e67eb5045` | Bass, 4.0 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0202.wav](https://freesound.org/people/zgump/sounds/73548) | `openverse:df9163c9-28fd-47c8-ac41-f8fa5e3be4c0` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [Synth Bass 120.wav](https://freesound.org/people/oriolgos/sounds/130938) | `openverse:cd098a16-c0ed-4230-9793-5a04e2692929` | Bass, 8.0 s | Openverse | CC BY 3.0 | Commercial use OK with credit | yes | | [D - Swelling Distorted Synth Bass](https://freesound.org/people/newagesoup/sounds/400634) | `openverse:979bf18c-8fe6-4619-9849-1bc9c966883f` | Bass, 13 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0105.wav](https://freesound.org/people/zgump/sounds/73003) | `openverse:619c0696-900a-47f3-858a-66119fcd2316` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 2](https://freesound.org/people/XHALE303/sounds/535540) | `openverse:185b0196-a490-49cc-95e8-9979cd6e29fb` | Bass, Loop, 12 s | Openverse | CC0 1.0 | Commercial use OK | yes | | [SYNTH BASS 0201.wav](https://freesound.org/people/zgump/sounds/73547) | `openverse:54314b80-d474-4cff-9e14-a1a21e1097b3` | Bass, One-shot, 1.8 s | Openverse | CC0 1.0 | Commercial use OK | yes | ## Questions **How do I play a bassline from one synth bass sample?** Load it into a sampler, set the root note (shown on the card when known), and play it across a range of about an octave either side. Beyond that it starts to sound artificial; use several samples at different pitches for a wider range. **What is an acid bass?** The squelchy, resonant bass of acid house, originally from the Roland TB-303 with its filter cutoff and resonance swept while it plays. Acid samples capture single notes or whole patterns of that sound. ## Related collections - [Free Reese bass samples](https://sound.shep.bot/samples/free-reese-bass-samples.md): Free Reese bass samples: detuned, phasing saw basses for drum and bass, jungle, dubstep and techno, as one-shots and loops with a licence verdict on each. - [Free sub bass samples](https://sound.shep.bot/samples/free-sub-bass-samples.md): Free sub bass one-shots and loops: clean sine subs, rumbling drops and deep bass tones for dubstep, drum and bass, grime and house, with key and licence shown. - [Free 808 samples](https://sound.shep.bot/samples/free-808-samples.md): Free 808 bass samples for trap, drill and hip hop, from clean sub booms to distorted glides, with key, length and a commercial-use verdict for each. - [Free synth pluck samples](https://sound.shep.bot/samples/free-synth-pluck-samples.md): Free synth pluck samples: short, bright plucked synth notes for house, trance, future bass and pop melodies, with root notes and a licence verdict. --- Source: https://sound.shep.bot/samples/free-synth-bass-samples