How to Master an Udio Song for Spotify
Published · by Loopin
Aim an Udio song at -14 LUFS with a -1 dBTP ceiling, fix the stereo width and low end before you add loudness, and upload a WAV. But first, check you actually have a file you're allowed to release.
Confirm the file and the rights first
At the time of writing (October 2026), Udio has had audio, video and stem downloads switched off since 30 October 2025, as part of its settlement and licensing deal with Universal Music Group, apart from a brief 48-hour reopening in November 2025. The new licensed platform is designed as a walled garden, so new creations aren't meant to leave the app.
So this guide is for Udio files you already hold. Before you master anything, check which terms applied when the song was made and downloaded, keep the proof (creation date, plan receipt, the original file), and read your distributor's AI-content rules. Spotify doesn't ban AI music, but it removes vocal impersonation and spam.
Check the width before the loudness
Udio exports often come out very wide. That sounds huge on headphones and collapses on a phone speaker or a mono Bluetooth box. Fold the track to mono and listen: if the bass drops out or the pads vanish, you've found the problem.
Narrow everything below about 150–200 Hz to mono and pull overall width back 10–20% if the mono check is bad. Udio vs Suno mastering differences covers why this shows up more on Udio than on Suno.
Tame the build-up that loudness will exaggerate
AI mixes tend to pile energy up at 250–400 Hz (mud) and 2–5 kHz (harshness). A wide cut of 1–2 dB in the low-mids and a gentle dynamic cut on the harsh band go a long way. Do this before limiting, because a limiter makes whatever's loudest even more obvious.
Also check the ends of the song. Udio outros sometimes fade oddly or cut off mid-reverb. Trim a clean ending with a 1–2 second fade so the track doesn't stop dead on Spotify.
Hit Spotify's number, not a bigger one
Spotify normalises to −14 LUFS integrated and recommends keeping true peak below −1 dBTP, or below −2 dBTP if the master is louder than −14. Anything louder just gets turned down, and the extra limiting only costs you punch.
The quickest way to land there: master the Udio track free on Loopin. The default export is a 16-bit WAV at about −14 LUFS with a −1 dBTP ceiling. Punchy (around −11 LUFS) suits rap and pop that need density; for everything else the default target is the safe choice.
A/B it honestly, then check three speakers
Use the loudness-matched Original-vs-Mastered switch so you're judging tone, not volume. The master should sound clearer and more even, not just louder. If it sounds thinner, try Warm; if it sounds dull, try Crisp.
Then play the downloaded master on headphones, a phone speaker and a car or laptop. The vocal should be clear on the phone, the bass controlled on headphones, and nothing should crackle in the loudest chorus.
Upload the WAV, not an MP3
Give your distributor the 16-bit WAV. Uploading an MP3 means Spotify re-encodes an already-compressed file, which adds swishy artefacts to cymbals and reverbs.
If you change anything later, go back to the original Udio file and run it through the free masterer again — don't re-master the master. For more on Udio quirks, read how to master an Udio track.
Frequently asked questions
What LUFS should an Udio song be for Spotify?
Around -14 LUFS integrated with a true peak of -1 dBTP. Spotify recommends -2 dBTP if the master is louder than -14 LUFS.
Can I still download songs from Udio?
At the time of writing (October 2026), no. Udio switched downloads off on 30 October 2025 after its UMG settlement, apart from a 48-hour window in November 2025. Check Udio's help centre for updates.
Can I upload an Udio song to Spotify?
Only if you hold a file you're allowed to release. Check the Udio terms that applied when you made and downloaded it, keep proof, and follow your distributor's AI rules.
Why does my Udio song sound thin on a phone?
It's usually too wide. Wide stereo collapses in mono, so the bass and pads drop out. Narrow everything below 150 to 200 Hz to mono.
Is louder better on Spotify?
No. Spotify turns tracks louder than -14 LUFS down, so extra limiting only reduces punch. Match the target instead.
Should I upload WAV or MP3 to my distributor?
WAV. A 16-bit, 44.1 kHz WAV is the standard; an MP3 gets re-encoded and loses more detail.