The short answer
Use Repaint when most of a song works and you want to revise a selected time region. Upload the audio, set IN and OUT in seconds, describe the change and render that region. Review the selected passage and both boundaries; this is a local audio revision, not whole-song lyric replacement.
Choose the region before the prompt
Listen to your authorized source in an audio player and identify where the issue begins and ends. Keep the full source file so the selected region has musical context around it. The timeline visualization is a guide, not a substitute for listening to the actual audio.
The current studio accepts MP3, WAV, FLAC and M4A files up to 100 MB. Keep an untouched original. Repaint is intended to revise a local region using the surrounding song, not guarantee that every sample outside your intended edit is identical.
1. Set valid IN and OUT values
After uploading, wait for the source duration to load. IN is the start time and OUT is the end time, both in seconds. Keep them inside the file duration and select at least one second.
For a musical phrase, avoid cutting through a word or a sustained note when possible. Include enough of the phrase to express the edit, but do not select the entire track to repair a small moment.
2. Describe the local change
Focus your prompt on the chosen region: vocal delivery, an instrument texture or the density of an accompaniment. Say what should continue from the surrounding music. Repaint's current direction is to keep source lyrics, melody and context while changing the local performance or texture; use Lyrics for complete replacement words.
Start near the current creativity setting and change it only if the first revision needs a different direction. Sign in, verify your email and review current task requirements before confirming your rights and submitting.
3. Review both joins
Compare a few seconds before IN, the edited passage and a few seconds after OUT. Listen for an abrupt change of ambience, a broken sustained note or a mismatch in the rhythmic feel. A passage can sound good alone but still have an awkward transition.
If the join is poor, move the boundary to a more natural phrase position or narrow the requested change. Keep each timing choice and prompt in your revision notes.
- Compare the region at a similar playback level.
- Listen to the full song once after checking the joins.
- Use Remix if your goal is a different arrangement throughout the track.
INPUT EXAMPLE — NOT A GENERATED RESULT
Selected-region input example
Source: my own 90-second demo. IN: 32.0 seconds. OUT: 42.0 seconds. Prompt: Make the vocal delivery in this phrase softer and more restrained. Keep the surrounding melody, words and accompaniment coherent.
Times are illustrative; choose values from your actual audio. This is not a rendered before-and-after example.
Frequently asked questions
Are IN and OUT measured in beats?
The current Repaint inputs use seconds. Listen to your audio to locate the musical phrase, then enter the matching times.
Can I select less than one second?
The current submission workflow requires at least one second between IN and OUT.
Will the rest of the file be sample-identical?
Do not assume sample-level identity from a generative workflow. Keep the original and review the full exported result if exact preservation is important.