Welcome to the Fadr documentation. This is where you'll find in-depth, technical information about Fadr's website, plugins, and API.

> If you're new to Fadr or looking for a quick guide, start with the [Help Center](/help).

### Plugins
* [SynthGPT Plugin](/docs/synthgpt-plugin)
* [Stems Plugin](/docs/stems-plugin)

### API
* [Overview](/docs/api)
* [Authentication](/docs/api-authentication)
* [Stems Tutorial](/docs/api-stems-tutorial)
* [Endpoints](/docs/api-endpoints)
* [Billing](/docs/api-billing)



Welcome to the Fadr documentation. This is where you'll find in-depth, technical information about Fadr's website, plugins, and API.

Welcome

Balance

You currently have US${credits} of credits. Your API usage will decrease your credits. Once your credits are used, your API usage will increase your balance.

Credits

Find information about your API credits, balance, and billing threshold.

Your current billing threshold is US${threshold}. We will bill you when your balance exceeds your threshold and/or when your subscription renews.

Billing Threshold

API Billing

Use Fadr technology in your own projects with the Fadr API.

Fadr API

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Create and manage your Fadr API authentication keys.

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API Keys

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Info

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SoundCloud

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View and revoke your plugin license codes.

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Fadr's top tier of bleeding-edge music tech.

Fadr Plus

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Securely manage your saved payment methods.

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View all past transactions and download your invoices.

Transactions

Account

Create

Create live DJ performances. Make transitions and mashups in real time. Fadr's tech handles synchronization – leaving all creative decisions to you.

Choose a turntable and add a track to start DJing.

Create playable drum kits with words. Use DrumGPT online or as a plugin.

DrumGPT access is included in Fadr Plus.

Plugin

DrumGPT allows you to curate a catalog of your favorite drum kits you create, giving your productions a personal sound that listeners can identify.

Every kit you make is composed of sixteen elements engineered to work together musically. You can fine tune each drum with precise pitch, volume, attack, decay, sustain, and release controls.

DrumGPT is a drum machine that is controlled by your ideas. Use your imagination or build upon DrumGPT's suggestions to create unique, never before heard drum kits in seconds.

DrumGPT Plugin

DrumGPT

Instruments

Pick one of your songs to view it.

Participate in active remix events to earn prizes like label releases.

Events

My Remixes

My Songs

Choose a pack and find tracks for your remix.

Library

Produce remixes and mashups with your songs. Change key and tempo. Fadr tech handles synchronization - leaving all creative decisions to you.

Create Subscription

Download your remix.

SoundCloud Contest

License Info

Export Remix

Export your remix

Remix

Upload any song and extract vocals, bass, drums, and melodies as audio and midi. Detect tempo, key, and chord progression.

Get separate MIDI files for vocals, bass, drums, and melody stems.

Extract {t, number} different instrument stem types.

Isolate vocals and instrumentals for karaoke, remixing, and more.

Separate Drums

Separate Electric Guitar, Acoustic Guitar, Piano, Strings, Wind, and Other

Separate Melodies

The highest quality stem separation on Earth

Pro Stems

Separate Vocals

Stems

Acoustic Guitar

Bass

Drums

Other Drums

Electric Guitar

Guitar

Instrumental

Kick

Other Melodies

Melodies

Piano

Snare

Strings

Vocals

Background Vocals

Lead Vocals

Wind

Stems Plugin access is included in Fadr Plus.

In Live Mode, stem what's playing live in real time. Use the stem mixer to isolate stems and perfect your mix.

In Record Mode, record your timeline and stem it with our best model. Run Live Mode as a preview while recording so you don't miss a beat.

In Upload Mode, drag audio in and drag stems out. You can access your stems library and separate all 16 stem types.

Stems Plugin

Create playable instruments with words or your voice. Use Siren online, as an app, or as a plugin.

Siren plugin access is included in Fadr Plus

Layer Siren tracks to paint rich, wide soundscapes with ease. This orchestra was made with three simple prompts all playing the same notes. Play around with the controls to reveal diverse possibilities.

All demos are raw Siren outputs - no effects.

Siren responds to the fine-grained details in your prompt. So when you want a piano, you can choose whether it belongs in a meditation chamber, a 70s power ballad, or something in between.

Following the vocabulary in your prompt, Siren can shift from synthesizing warm recreations of nostalgic instruments to pioneering futuristic instruments with unprecedented textures.

The current sound design process is long, difficult, and abstract. Siren helps you make more creative sounds faster since it’s controlled directly by your ideas.

With Siren, you can fine tune the instruments you generate. Shape your sound with precise attack, decay, sustain, and release controls.

Dive deeper into sound design with Siren’s filter page. Apply low-pass, high-pass, band-pass, or notch filters with pinpoint accuracy, choosing between 12 or 24 dB/oct configurations. Visualize the sonic landscape with an ultra-precise spectrograph display, giving you real-time insights into the frequency response of your synth.

Siren allows you to curate a catalog of your favorite sounds you create, giving your productions a personal sound that listeners can identify.

The world's most advanced instrument creation engine.

Siren Plugin

Siren

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Get more detailed, technical info about Fadr.

Choose a guide to learn about making music on Fadr.

API Terms

API Terms - Fadr

Privacy

Privacy - Fadr

Terms

Terms - Fadr

Keep up to date on all things Fadr.

Blog

Check out all of the active remix events on Fadr and pick one to get started.

If you're more experienced, you can download the stems, make your remix however you'd like, then come back and submit it here.

If you're new to making music, Fadr's music tech can help you craft your remix. Once you're done, you'll submit to the contest from the Remix Page.

Prizes

Remixes

Title

You only need to submit here if you made your remix in your DAW. If you made it on Fadr, please submit it on the Remix Page.

Submit

Edit Profile

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Share to SoundCloud

Drum stem separation is available to all Fadr Plus subscribers.

Pick a genre and press play. Use "S" to solo and "M" to mute parts.

Ever wanted access to the sounds your favorite producers are using? Decompose drum sounds on Fadr and reverse engineer the pro's sounds.

Sampling is an art form. You can combine sampled drums with your own, layer two samples, chop breaks, and more - it's up to you.

Fadr Drum Stems gives you unprecedented access to drum sounds.

Upload any song and extract kick, snare, and other drum stems.

Drum Stems

Subject

Reach out to us to get help.

Contact

We can't wait to see what you make.

Unlock Fadr's most powerful features. Use Pro Stems, the highest quality separation on Earth. Separate 18 stem types — the most anywhere on Earth. Supercharge your DAW with the <synthgpt>Siren</synthgpt>, <drumgpt>DrumGPT</drumgpt>, and <stems>Stems</stems> plugins. Unlock lossless WAV downloads, one-hour uploads, and much more.

Integrate the world's finest stems into your own project for the best price on the market.

API Access

Have an unlimited number of stem separations running at once.

Concurrent Stems

Separate drums into kick, snare, and everything else.

Individual Drum Stems

Increase the song upload length limit from 10 minutes to 1 hour.

1 Hour Uploads

Separate melodies into piano, guitar, strings, wind, and everything else.

Individual Melody Stems

Automatically extract key, chords, and midi for every non-drum stem you make.

Midi Detection

MP3 Downloads

The finest vocal remover and stem separation on the planet delivered in 30 seconds or less.

Remix and mashup anything with automatic sync, leaving creative decisions to you.

Remix Maker

Download individual tracks from remixes so you can keep working in your DAW.

Individual Remix Tracks

High quality vocals, bass, drums, and other stem separation.

Basic Stems

Unlimited cloud storage for your results so you can access them forever.

Unlimited Storage

Fadr Plus gives you capabilities you can't find elsewhere on Earth.

Extract the lead and background vocals separately from any song.

Individual Vocal Stems

Download all of your results in lossless, 32 bit WAV format for professional applications.

WAV Downloads

Fadr Plus has the most stems and the best price. It's not even close.

Annual

Upgrade any music workflow with access to Fadr's fundamental technology.

Fadr Basic

Monthly

Unlock pro status with unparalleled access to Fadr's top tier of bleeding-edge tools.