You have a demo: a phone voice memo over a guitar, a rough bounce from your DAW, a song you've played live for a year. You want it to sound finished, or you want to hear it as UK garage instead of folk. Suno's Cover can do both from your own upload. It hears the melody and the structure, and it sings the words you give it.
That last part is where most covers go wrong. Suno does the listening well. The text you paste next to the upload is usually what fights it.
Only cover songs you wrote or have the rights to. Suno checks uploads, and that check is covered below.
What Cover listens to, and what it reads
A Cover has two inputs pulling on the result:
- The audio. Your demo's melody, phrasing, sections and tempo. Audio Influence sets how closely Suno follows it.
- The text. Styles say how the new version should be produced. The lyric box is what gets sung, word for word. Style Influence sets how much the Styles get their way.
When the two agree, the cover sounds like your song, produced. When they don't, you hear the gap: a second verse Suno invents because the lyric box has one, a chorus sung with someone else's words, a section the Styles call a drop where your demo has a bridge.
The three mistakes that break a cover
1. Lyrics that aren't what you sang. Cover sings what's in the box. If you tidy a line, swap a word or let a tool rewrite your verse, Suno has to fit new words to your old melody, and it shows. Paste the lyric exactly as sung. Write repeats out in full, with no (x2), and take out anything in parentheses unless you want it sung as a second voice.
2. Section labels that don't match the demo. If your demo goes verse, chorus, verse, chorus, bridge, chorus, the lyric box should say exactly that, in that order. A generic arrangement pasted from a template ("Intro, Verse 1, Pre-Chorus, Chorus, Drop…") points Suno at sections your audio doesn't have.
3. Styles that invent a different song. A Styles prompt written from scratch for a genre brings its own arrangement and tempo. For a cover, the arrangement is already decided: it's on the demo. Leave out a BPM unless you know your demo's. A guessed tempo fights the audio.
Finish it, or move it
Decide which job the cover is doing before you write a word of Styles, because the two pull the sliders in opposite directions.
Finish it keeps the genre and makes it sound produced. The demo's own parts are the hero: the guitar figure you played, your vocal phrasing. Styles add only what a finished record needs: a rhythm section, a real low end, space in the mix. Lean on the audio:
- Audio Influence high (start around 80)
- Style Influence moderate (around 60)
- Variety 0, so Suno doesn't rewrite your Styles
Move it keeps the melody and the words and changes the genre. Now the Styles own the production: drums, bass, groove and mix from the new genre, with melody, structure and words from the demo. Lean on the text:
- Style Influence high (around 90)
- Audio Influence moderate (around 50)
- Variety 0
These are starting points, not rules. Suno documents the controls but not the right values, so check them in your own composer. If the melody drifts from the demo, raise Audio Influence. If it still sounds like the demo, lower Audio Influence or raise Style Influence.
Write the lyric box like a session sheet
Keep every sung word and add direction around it. Each header gets a performance cue, and the song gets an explicit ending:
[Verse 1 | close and conversational]
(your lines, exactly as sung)
[Chorus | full voice, the band lifts]
(your chorus, exactly as sung)
[Bridge | stripped back, voice and keys]
(your bridge)
[End | last line alone, hard stop]
The cues are instructions to the band. Say the same delivery words again in Styles ("close conversational verses, full-voiced lifting choruses, a stripped-back bridge") so the two inputs agree.
If Suno says your upload matches other music
Suno runs a filter on uploaded audio. Sometimes it flags your own recording as matching existing music, even when you wrote every note. That's the filter on the audio, not anything in your prompt. Changing the text won't help. A different mix or a different section of the demo sometimes gets through.
Covering your demo in Session Sheet
Cover my demo builds the text side of a Cover from the demo you describe. Paste your lyrics with their section labels, choose Finish it or Move it, and add the genre, what's on the demo and, if you know them, the title, BPM, key and length. Then tick that it's your own recording.
You get Styles written around your sections in the order you sang them, a lyric sheet with a cue on every header and an ending added, Exclude, and a settings card with the Cover sliders for the job you picked. No model writes or repairs your lyrics: every sung line stays as you sang it, and lint findings are shown for you to judge. The settings card's hints open with the steps in Suno: upload, choose Cover, paste.
Bringing an older Suno prompt instead of a demo? The free prompt upgrader cleans it up for v6. Otherwise, start free. A demo cover counts as one song, like any package.