CoSo is the AI-assisted music creation and sound discovery app that lets you follow your instincts and create in the moment. Whether you’re making unique music for your social posts or getting inspo for your next hit, CoSo is the app to bring instinctive creation to your fingertips.

Stop digging—start creating

CoSo listens to your track in real-time, then serves up Complementary Sounds that go together. With the "does this sound good together" out of the process, you can focus on letting your creative instincts lead you.

Instant inspiration
Create a Stack by choosing a style then add up to eight instrumental layers from across the Splice catalog—every selection is uniquely yours and destined to work.

Everything under your thumb
Swipe right to choose a new sound, swipe left to delete, tap a layer to mute it, and long-press to solo. Then mix using volume sliders per layer.

Save. Send. Share.
Send your stack to socials, save to your library, share with a friend, or export it to Ableton Live. You can also locate your sounds in the Splice library to use them in your DAW.

CoSo by Splice. Make music in the moment.