How to Use Choralize

A step-by-step guide to generating SATB harmonies

1

Create an Account

Visit the sign-up page to create a free account. No credit card required to get started. You'll receive some free credits to try the service.

2

Choose a Processing Mode

Choralize offers three modes:

  • Stem Separation — Extract individual instruments (vocals, drums, bass, etc.) from a full mix. Uses Demucs AI. Costs 10 credits.
  • Song Score — Extract melody and generate Do-Re-Mi solfège with lyrics. Great for learning and teaching. Costs 20 credits.
  • Full Harmonization — Generate complete SATB (soprano, alto, tenor, bass) parts from any audio. Includes solfège display and MIDI export. Costs 30 credits.
3

Upload Your Audio

Drag and drop any audio file (MP3, WAV, FLAC, M4A) into the upload zone. We support a cappella recordings, vocal takes, and full song mixes. Processing typically takes 30–120 seconds depending on the mode and file length.

4

Review Your Results

Once processing is complete, you'll see:

  • Solfège Display — Do-Re-Mi notation mapped to lyrics, organized by phrase for easy reading.
  • SATB Parts — Color-coded soprano, alto, tenor, and bass lines with solfège and lyrics aligned to phrases.
  • MIDI & ABC — Downloadable MIDI files and ABC notation for each part, plus a combined score.
  • Stems — Isolated audio stems for each instrument (separation mode only).
5

Manage Credits

View your credit balance and purchase more on the subscription page. Credits are used per job and never expire.

Tips for Best Results

  • For vocal melody extraction, use a clean vocal recording when possible.
  • For full songs, the harmonization mode extracts vocals automatically.
  • Shorter songs process faster — try under 5 minutes for quick results.
  • Use the "Single Voice" source option for a cappella recordings without background instruments.
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