Prepare stems for upload

1. In your DAW, set one common start point, normally the beginning of the song.
2. Export every stem from that point, including silence before an instrument enters.
3. Keep the original song length and timing. Do not trim each file to its first note.
4. Include effect tails where they are part of the sound you want.

Moozix lines files up at the start. It does not guess where a separately trimmed chorus vocal belongs.

Supported uploads are WAV, AIFF/AIF, FLAC, MP3, M4A and OGG, in mono or stereo. Prefer an uncompressed or lossless export from the original session when available; converting an MP3 to WAV does not restore lost detail.

Each file must be 10 minutes or less and 256 MB or less. A session also has a combined upload limit of 4 GB. Files are converted for the processing workflow; finished exports are 48 kHz, 24-bit WAV.

Remove clipping in the source if you can. Quiet recordings can be brought into the mix, but processing cannot reconstruct a clipped recording or recover music hidden beneath severe noise.

Use clear names such as Lead Vocal.wav, Kick.wav, Bass DI.wav, Guitar Left.wav and Keys Right.wav.

Instrument names are detected on upload; check the result before mixing. Explicit Left, Right, or standalone L/R labels guide initial panning. Names containing both directions are ambiguous and keep automatic placement.

If a track name is unclear, use its preview button to listen and choose the correct instrument manually.

For detailed control, export individual parts such as kick, snare, claps and overheads. A complete drum kit can instead be uploaded as Drum kit. A finished backing track can be labeled Beat / full instrumental.

Avoid including both individual tracks and a sum of those same tracks. Check for duplicated alternative mic or export versions. For more than 38 parts, create intentional submixes in your DAW, such as a stereo percussion or backing-vocal group.