demorphus
To check a song, analyze the original file with a named detector, save the score and date, and examine evidence of how the music was created. A score alone cannot establish who composed or recorded it.
1. Choose the exact file
Use the file you want to examine, rather than a recording of playback or a clip re-encoded by a messaging app. Keep an untouched copy. Record the filename, duration and format so you do not accidentally compare different versions.
For a Suno export, also record the generator version when known. You do not need to alter the track before submitting it to the checker.
2. Run a check and save the report
The free Demorphus checker sends your file to SH Labs with your consent and displays the returned score and verdict. Download the report: it identifies the file with its SHA-256 hash and records the test date, plus the detector version when available.
The tool displays the daily allowance and file limits. An unavailable analysis is not a score of zero.
3. Read the verdict alongside the score
An 80% result does not mean that 80% of the notes are artificial. It is a model output interpreted through that detector’s categories and thresholds. Read our AI score guide for those distinctions.
4. Investigate disagreements
If you use a second detector, submit the identical file and keep its result separately. Do not average outputs from different systems without a calibration method. Afchar and coauthors discuss generalization to new generators and robustness to audio transformations; their research is not an audit of SH Labs.
5. Compare original and processed exports
Check both exports under the same conditions, then listen at comparable playback levels. A lower score and better sound are separate observations. Keep the audio and reports even when processing does not improve the result.
Stems, recording sessions and creation records provide a different kind of provenance evidence. A detector does not replace those records or decide whether a distributor will accept your release.
Prepared with AI assistance. Sources below.