Products: Apps & a Course for Producers

AI stem splitter · in your browser

Split any song.
Mix it live.

Drop in any track and pull it apart into vocals, drums, bass and more, each on its own fader. Solo a part to learn it, mute it to play along, or download the stems for a remix.

Vocal remover and 4-stem splits on the free plan, no watermarks
Pro adds guitar and piano stems, WAV, speed and key change, and saved loops
Nothing to install. Works on your phone too

Split a song free Free plan
Pro US$6.99/mo or US$49/yr

EQ ear training · in your browser

Hear it. Find it.
Fix it.

Short exercises that train the ears you mix with. Hear an EQ move and name the band, find the muddy instrument in a full mix, then hunt down resonances and cut them in real music.

A free daily session and the first two levels of every exercise
About two minutes a go. No account needed
Headphones or good speakers are all you need

Start your first session Free to start
Pro coming soon Join the Pro founding list →

Menu-bar recorder · macOS

Record anything
your Mac plays.

Spotify, Apple Music, YouTube, any app: PrintBus records it to named, trimmed WAV files, ready to drag into your session. No Loopback, no BlackHole, no routing.

Starts when the sound starts and saves when it stops, one file per track
Built-in loudness meter: LUFS and true peak for every take, to EBU R128
macOS 14.4 or later, Apple silicon or Intel

Try it free for 14 days US$39 one-time
14-day free trial, no card

// Online course · mixing & compression

The Compression Code.

Stop guessing.
Start hearing.

The interactive course that takes you from copying settings off a forum to making compression decisions by ear: what a sound needs, which compressor to reach for, and when to stop.

Nine lessons and a capstone on your own mix, with exercises in your own DAW
Lifetime access. Every future update free
30-day money-back guarantee

See the course US$49 one-time
Lesson 1 free, no sign-up Read lesson 01 free →

Products

The Compression Code.

Hear about what's next