Pro-Osc
synth · KontaktThe room-filling analog. Raw oscillators sampled from a vintage analog synth, Curtis-filtered and warm — leads, basses, pads, keys and brass, all performable from the mod wheel.
14 waves · 30 IRs · 83 presets
everything we make
Plugins
Every instrument and effect we make, in one place — five synths for Kontakt, a free native plugin, and what’s next. Press play on any of them.
Instrumentssynths for Kontakt 6+ · free Player
Chip-Osc
synth · KontaktByte-sized, then eerie. Built from the raw oscillators of a digital hybrid synth — bright, classic chiptune all the way to deep, dark cinematic soundscapes.
20 waves · 30 IRs · 81 presets
JX-Osc
synth · KontaktYour 80s sci-fi sidekick. Sampled from an 80s-era analog synth — lush strings, brass and pads that beam you straight into your favorite sci-fi soundtrack.
12 waves · 30 IRs · 81 presets
Digi-Osc
synth · KontaktA pixel-perfect playground. Raw oscillators from three digital synths and eurorack modules — bright, beautiful and electronic, a treasure trove for melodies.
22 waves · 30 IRs · 81 presets
Moo-Osc
synth · KontaktUtterly rich and creamy. Heavy, rich and creamy with no filler — funky basses and timeless leads that instantly elevate a track.
22 waves · 30 IRs · 84 presets
The Osc synths run in Kontakt 6 or later — the free Kontakt Player works — and install through Native Access. First time? Install guide & FAQ →
The Collectionall five, one price
The Osc Collection
bundle · 5 synthsAll five synths for Kontakt, one bundle. Pro-Osc, Chip-Osc, JX-Osc, Digi-Osc and Moo-Osc — sampled from real vintage, digital and eurorack gear, built and finished by the two of us.
5 synths · 90 waves · 150 IRs · 410 presets
$99$145save $46
Appsfor iPhone, iPad and Apple Watch
new
clay & kelsy
Songwriting by Clay and Kelsy
A writer’s looper for iPhone, iPad and Apple Watch. Feel a tempo, put the idea down, and it’s already looping. Stack your layers, write the words, hit export. One sitting, one app.
Feel a tempoPut it downStack layersWrite the words
iOS
free to start
Freeno strings
DEM-Osc
free · VST3 / AUA free taste of all five. One oscillator from each of the five synths under one roof: a native VST3/AU plugin for Mac, or a Kontakt version for Mac and Windows. The easiest way to hear where the collection goes.
5 waves · 4 IRs · 25 presets
Free things
kontakt · freeFive instruments we gave away. A market gong, our most-used 808, a one-string cigar-box guitar two ways, and a set of ringing wrenches — real instruments we sampled, free forever.
Kontakt 6+ (full version) · direct downloads
Free
Plugins by Clay and Kelsy Instruments — synths for Kontakt, a free plugin, and Songwriting by Clay and Kelsy for iPhone, iPad and Apple Watch
Clay and Kelsy Instruments is a woman-owned, queer-owned instrument company in Los Angeles. We make the Osc Collection — five synths for Kontakt, each sampled from real vintage, digital and eurorack gear — the free DEM-Osc plugin (VST3 and AU for Mac, plus a Kontakt version for Mac and Windows), and Songwriting by Clay and Kelsy, a writer’s looper for iPhone, iPad and Apple Watch. Every synth on this page has a play button, so you can hear it before you buy.
The instruments
- Pro-Osc — the room-filling analog. Raw oscillators sampled from a vintage analog synth, Curtis-filtered and warm. 14 waves, 30 impulse responses, 83 presets. $29, for Kontakt.
- Chip-Osc — byte-sized, then eerie. A digital hybrid synth, from bright chiptune to dark cinematic soundscapes. 20 waves, 30 impulse responses, 81 presets. $29, for Kontakt.
- JX-Osc — your 80s sci-fi sidekick. Lush strings, brass and pads from an 80s-era analog synth. 12 waves, 30 impulse responses, 81 presets. $29, for Kontakt.
- Digi-Osc — a pixel-perfect playground. Three digital synths and eurorack modules. 22 waves, 30 impulse responses, 81 presets. $29, for Kontakt.
- Moo-Osc — utterly rich and creamy. Funky basses and timeless leads. 22 waves, 30 impulse responses, 84 presets. $29, for Kontakt.
- The Osc Collection — all five synths for Kontakt in one bundle: 90 wave sets, 150 impulse responses, 410 presets. $99 (was $145).
- DEM-Osc — free. One oscillator from each of the five synths, as a native VST3/AU plugin for Mac, or a Kontakt version for Mac and Windows. 5 waves, 4 impulse responses, 25 presets.
- Songwriting by Clay and Kelsy, a writer’s looper for iPhone, iPad and Apple Watch. Feel a tempo, put the idea down, and it’s already looping. Free to start.
- Free things — five free Kontakt instruments we sampled ourselves: aGong, gr808 kick, Diddley ebow, Diddley plucks and Wrenches.
Requirements
The Osc synths run in Kontakt 6 or later — the free Kontakt Player works — and install through Native Access. DEM-Osc is a native VST3/AU plugin for macOS that runs inside your DAW, and its Kontakt version runs in the free Kontakt Player on Mac and Windows. Songwriting by Clay and Kelsy runs on iPhone, iPad and Apple Watch. If you get stuck, our install guide and FAQ walks through every step, and replying to any email from us reaches the two of us directly.
Frequently asked
- Do I need Kontakt to use the Osc synths?
- Yes — the five Osc synths are Kontakt instruments. They run in Kontakt 6 or later, and the free Kontakt Player works; you don’t need the full version. They install through Native Access.
- Can I hear the synths before I buy?
- Yes. Every synth card on the plugins page has a play button that streams a real demo, and each press plays the next one — so you can hear a lead, a bass, a pluck and a pad from each instrument.
- What’s in the Osc Collection, and how much do I save?
- All five synths — Pro-Osc, Chip-Osc, JX-Osc, Digi-Osc and Moo-Osc — for $99 instead of $145 bought separately. Together that’s 90 wave sets, 150 impulse responses and 410 presets.
- Is DEM-Osc really free?
- Yes. It’s yours to keep, with no trial and no timer. A few of the deeper effects are saved for the paid Osc Collection, and DEM-Osc is the free way in. It goes through a free checkout so we can email it to you. It’s a native VST3/AU plugin for Mac, and there’s a Kontakt version for Mac and Windows.
- What is Songwriting by Clay and Kelsy?
- Songwriting by Clay and Kelsy is our writer’s looper for iPhone, iPad and Apple Watch: feel a tempo, put the idea down, and it’s already looping. Stack layers, write the words, fill in the chords and export. It’s free to start.
- Who makes these?
- Clay and Kelsy — a music duo and instrument designers in Los Angeles. Woman-owned, queer-owned, and the same two people who read every email.