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A Suno detector can return an AI-related result for human vocals over generated music. The mix contains more than one source. Treat the result as a prediction about the submitted audio, not proof that every performance or instrument was generated.
Document the sources by component
Record which parts came from a generator, which were performed and which were replaced or edited. Keep the vocal recording, instrumental export and session where possible. “Human vocals” and “AI instrumental” can both accurately describe one production.
If the track belongs to someone else, do not invent its history from listening or a model label. Ask for creation records relevant to the question. A project can contain generated material without every contributor having used a generator.
Read hybrid detection at the right level
SH Labs advertises support for processed and hybrid content. That is its stated scope, not a guarantee for a particular vocal-to-instrumental balance. Its public page does not establish which component caused an individual prediction.
A Suno attribution does not establish that the singer is synthetic. Conversely, no Suno label is not a certificate that every component was recorded by a person. Read overall score, verdict and generator attribution as separate fields.
Test the finished mix as its own file
For a question about the finished song, submit that export to the checker and keep the report with its filename and date. You may examine components you are entitled to submit, but a stem result does not substitute for the mix result.
Do not average a vocal score and an instrumental score into a final-song probability. They concern different inputs and you have not established a calibrated combining rule. If you remix the balance, keep the new export separate and test it when needed.
Choose an action that answers your question
Keep sessions and source notes for production history. Repair an affected part for a listening issue. To evaluate processing, use Cleaner and compare the returned sound and report.
SH Labs’ terms describe predictions, not conclusive facts. A changed verdict does not rewrite a song’s creation history. The accuracy evaluation guide explains why hybrid material belongs in its own category when you assess a checker.
Prepared with AI assistance. Sources below.