How to clean up an AI song

By Will Barratt, who builds Oxide · Updated 8 November 2026

Short answer: fix the sound before you master it. Clean the metallic residue first (on the stems if you have them, on the full song if you don’t), check what the cleanup removed, then mix and master. A mastering chain makes shimmer louder; it is not a repair tool.

This works the same whether the song came from Suno, Udio or another AI music generator. The file is what matters.

Oxide can inspect a full mix as well as individual stems. Try Oxide Lite free. Pro unlocks everything.

The order that works

Best source. The highest-quality download you have. WAV over MP3; converting MP3 to WAV adds nothing back.
Gross problems. Clicks, cut-off tails, a missing word. Regenerate or edit those; cleanup will not invent them away.
Stems, only if one part owns the problem. If the vocal or the hats are the issue, work on that stem. If the harshness is everywhere, work on the song.
Residue. Clean the metallic shine, fizz and watery smear, and listen to what was removed.
Mix. EQ, de-essing, compression, after the residue is under control.
Master. Loudness and final polish last, on a file that already sounds right.

Compare every step at matched loudness against the untouched original.

Clean the song or the stems?

Situation	Work on
You only have the stereo file	The full song
Harshness is spread across everything	The full song
One part is the problem (usually vocal or hats)	That stem
The stems sound worse than the song	The full song, or another stem export
You want a quick listen before deciding	The full song first

Processing the whole song to fix one stem is less precise and can change parts you were happy with. If you can get stems, How to clean Suno stems is the more controlled path, and it works for stems from other tools too.

Common AI music artifacts

What you hear	Usually
Metallic or glassy shine on vocals and hats	Shimmer — see Why does Suno sound metallic?
Fizz or grain that grows under compression	Residue in the top end
Watery, smeared held notes and tails	Residue on sustained sound
Plastic or robotic vocal tone	Residue on the voice — see How to clean Suno vocals
Splashy cymbals	Residue, sometimes a weak split
Mud or a buried vocal	A mix balance problem, not an artifact

Cleanup versus mastering

Mastering raises level and evens out tone across the song. Run it on a shimmering file and the shimmer comes up with everything else. A limiter is especially unkind to fizz, because it brings quiet top-end residue closer to the loud parts. AI mastering presets do the same thing faster.

So keep them separate: clean first, master last. If the master still sounds harsh after cleanup, go back to the stem that is causing it rather than adding more top-end cuts on the master bus.

How to clean up an AI song with Oxide

Open Oxide in your browser, or use the macOS or Windows app.
Load the song (or the stem that owns the problem).
Run a scan.
Listen to the cleaned song and to what was removed. You want fizz and metallic residue, not vocals, melody or drum attacks.
If musical parts leak into the removed signal, the pass is too strong. Back off and inspect again.
If one instrument still bothers you, get stems and clean that part on its own.

Your audio file stays on your computer; a scan sends a small numerical summary, not the audio. Batch Triage in Lite checks up to 3 stems; batch folder render is part of Pro. WAV export happens in the desktop app or plugin, not in the browser; Oxide Pro and Oxide Studio add 24-bit WAV export, the 5-band breakdown and folder rendering.

What cleanup can and cannot do

Cleanup can reduce metallic shimmer, grainy air and some watery smear so the song is easier to mix and master. It will not write a better melody, fix timing, or turn a rough generation into a different record. It will not hide the fact that a track was generated, and it should not be used that way. Oxide’s GREENLIGHT readout is a studio check, not a guarantee.

Suno, Udio and other generators

Suno: MP3 on all plans; WAV and Get Stems on Pro and Premier (Suno Help Center, checked 8 November 2026). Start with How to clean Suno stems.
Udio: audio and stem downloads have been disabled since October 2025 (Udio Help Center, checked 8 November 2026). Songs and stems you downloaded before then can be cleaned exactly as above.
Others (Stable Audio, ElevenLabs Music and similar): same steps. Inspect the file, clean the residue, listen to what gets removed.

Try Oxide Lite

Try Oxide on the song you want to clean up. Try Oxide Lite free. Pro unlocks everything.

Working in a DAW? REAPER · Ableton Live · Logic Pro · FL Studio · Cubase · Pro Tools

Common questions

How do I clean up an AI song?

Load the best-quality file you have, run a cleanup inspection, and listen to what is being removed. If one part is the problem, get stems and clean that part.

How do I clean AI stems before mixing?

Line them up, solo each one, and listen in the gaps. Another instrument in the gaps is bleed; a metallic coating on the part is residue. Clean the residue, then mix.

Should I clean the mix or the stems?

Use the mix when that is all you have, or when the harshness is everywhere. Use stems when you can isolate the part that sounds wrong.

Should I clean before or after mastering?

Before. Mastering and limiting make shimmer and fizz louder.

Can I clean Udio songs?

Yes, if you have the files. Udio has disabled new audio and stem downloads since October 2025, so this applies to songs you already downloaded.

Will cleanup make the song sound like a new recording?

No. It can make the song easier to mix and master. It will not replace arrangement, performance or a better generation.

Sources

Suno Help Center: What types of files can I download? · How do I get stems?
Udio Help Center: Changes associated with the UMG partnership

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