Rehearse with your own stems

Dial in
the vibe.

StemMixr keeps your stems adjustable. Mix the parts, change the tempo, shift the key. Right on your iPhone, without making another backing track.

Leave your address and we will email you when StemMixr beta testing opens. That is the only thing the waitlist is for.

Your address is stored in our own AWS account and used only for what you agreed to above. See our privacy policy.

StemMixr mixer on iPhone, CowBell stem pushed to +20 dB. — +20 dB

Your stems stay adjustable.

A backing track locks in yesterday’s decisions. With StemMixr, your part can come up, the tempo can come down, and the key can move with your voice. Change it and keep going.

From idea to stage

An artist walking through a park at sunset, headphones on, phone in hand. — The music comes with you. Listen. Try things. Find what works.

A singer moving in a sunlit rehearsal studio while a phone plays StemMixr from a speaker. — Stay in the room. Change the playback without breaking rehearsal.

An artist backstage, headphones around their neck, phone in hand, ready to walk on. — Walk in ready. You know the song. You know the playback.

When it counts

Built to keep playing.

StemMixr is built for precise, dependable playback, both offline and in the background, so you can stop thinking about the player and focus on the performance.

Shape the rehearsal as you go.

Mix

Turn your part up. Pull the rest back.

Tempo

Slow it down or push it forward. Pitch stays put.

Key

Move the song until it fits your voice. Fine-tune a stem on its own to experiment.

Put it through
a real rehearsal.

StemMixr is heading into beta. Bring your own stems, use it in a real rehearsal, and tell us what works and what gets in your way.