How to Bounce Stems from Pro Tools for AI-Assisted Mixing

Pro Tools doesn't have a single "export as stems" button the way some newer DAWs do — stems come from how you route tracks to buses before you bounce, which makes organization the real first step.

Group tracks by bus before you bounce

Create a bus for each intended stem (Drums, Bass, Guitars, Vocals, BGVs, FX — whatever split makes sense for the song) and route the relevant tracks into each one. Many engineers organize this with Routing Folders per stem group, named clearly, so it's obvious months later which bus was which. This grouping is what actually defines your stems — the bounce step just prints what you've already routed.

Bouncing each stem

1. Solo (or mute everything except) the tracks feeding one bus, or route only that bus to your output.
2. Go to File → Bounce to Disk (or Shift+Cmd+K on Mac, Ctrl+Shift+K on Windows).
3. Choose your file format, bit depth and sample rate — 24-bit is standard for anything heading into further mixing — and pick a destination folder.
4. Repeat per stem, keeping every bounce starting from the same bar one and running the full length of the song, even through sections where that stem is silent.
5. Keep every stem at one uniform sample rate across the whole set — a mismatched rate on even one file is a common cause of playback speed or sync issues once everything is imported elsewhere.

Offline vs. real-time bounce

Offline bounce is faster and is the right choice for most sessions. Real-time bounce is sometimes required when a session uses outboard hardware or specific plugins that need to run in real time to behave correctly — if your session includes hardware inserts, check that before assuming an offline bounce captured everything correctly.

Bringing Pro Tools stems into MixingMusic

Once you have a full set of aligned, full-length bounces, MixingMusic's stem mixer works with up to 12 stems, offers a genre preset as a starting point, and gives you EQ, compression and reverb per stem ahead of a mastering pass. This is a file-based handoff — export from Pro Tools, upload the result — with no session file import or account connection between the two.

If the Pro Tools session is already a finished, balanced mix, bouncing the stereo master and mastering it directly is the more direct route.