Add Instrumental: vocal to full track
Start from a vocal or a cappella and describe the backing. MuseSong composes chords, groove, and instrumentation that follow your melody.
Add Tracks to Your Songs
Every song is missing something at some point. Add a vocal performance to an instrumental, or add a full band behind a vocal, without leaving your browser.
Price & free credits
20 credits per runNew users get 20 free credits — one run, no account needed to tryPacks from $4.99 (100 credits)Starter plan $9.99/mo (300 credits monthly)
Full pricing Cost—
Two ways to complete a song
Pick the direction that matches your source. Both tools keep your original and save each new version to your Library.
Add Vocals: instrumental to full song
Start from a beat or instrumental, paste lyrics, and describe the voice. MuseSong writes a topline and sings your words.
Use Library songs or uploads
Any song you made with MuseSong can be used on any account. Uploading your own audio is included with paid plans and credit packs.
Compare every take
Each run returns separate versions, so you can try different styles on the same source and keep the best one.
Which tool should I use?
You have a vocal, a voice memo, or an a cappella
Use Add Instrumental to build the arrangement around it.
You have a beat or an instrumental
Use Add Vocals to hear your lyrics sung over it.
You have a full song but want a different part
Split it first with the Vocal Remover, then add a new vocal or a new backing to the part you keep.
How to add a track to a song
Choose a direction with the switch above the studio, then follow three steps.
Start now- 1
Choose your song
Pick a Library song or upload audio you own.
- 2
Describe the new part
For instrumentals, describe the instruments and mood. For vocals, paste lyrics and describe the voice. Add a title and list styles to exclude.
- 3
Generate and compare
Listen to the takes, download your favourite, or continue with the extender.
Tips
- Clean sources give clean results: remove existing music from a vocal, or vocals from a beat, before adding the new part.
- Keep descriptions short and concrete: genre, mood, two to four instruments, tempo.
- Use the exclude field to stop the sounds you keep hearing and do not want.
Where to start
Add Instrumental: describe the band, e.g. acoustic guitar, soft drums, warm folk.
Add Vocals: paste lyrics and describe the singer, e.g. smooth male R&B vocal.
Vocal Remover first, then Add Instrumental to the vocal.
Keep creating with MuseSong
AI Song Maker Convert any text idea or scene into a complete song with melody, vocals, and harmony.Lyrics to Song Paste your verses, chorus, and bridge to hear AI sing your exact poetry and rhymes.AI Music Extender Lengthen existing tracks smoothly from any timestamp while maintaining rhythm and key.AI Song Cover Re-imagine any audio track in a completely new vocal tone or musical genre.Add Vocals Give instrumentals and beats expressive AI vocal performances matched to the mood.Add Instrumental Turn acapella or vocals-only recordings into full arranged songs with AI backing tracks.Vocal Remover Isolate crystal clear acapella vocals and clean instrumental backings in seconds.AI Music Video Turn a song into a full-length MP4 video.
New to AI music? Read the MuseSong guides.
Add tracks FAQ
What is the difference between Add Vocals and Add Instrumental?
Add Vocals sings lyrics over an instrumental. Add Instrumental builds a backing track around a vocal. Choose the one that adds the part your song is missing.
Can I upload my own audio?
Yes, on paid plans and credit packs, up to 4 minutes on Lite and the Small Pack and up to 8 minutes on Pro, Ultra, and the larger packs.
Will my original be changed?
No. Results are saved as new songs in your Library.
How much does it cost?
The credit cost for the selected model is shown next to the button before you submit. Failed tasks are refunded automatically.
How long are my files kept?
Every task stays listed in your Library, but the audio files themselves are hosted by our generation partner for about 14 days. Download the takes you want to keep: MP3 is included with paid plans and credit packs, and WAV export with Pro, Ultra, and the Large or Mega packs.
What audio am I allowed to use?
Only audio you created, own, or have permission to transform. When you upload a file you confirm that you hold those rights. AI processing does not clear third-party rights, and MuseSong commercial terms only cover what you are entitled to use. Rights holders can contact [email protected] with evidence of a dispute.
Is it free to use?
Yes — every new user gets 20 free credits, enough for one run, and you can use them before creating an account. Sign up free to keep your result; credit packs start at $4.99 for 100 credits.
How many credits does it cost?
A run costs 20 credits. The exact cost for the selected option is shown next to the button before you submit, and failed tasks are refunded automatically.
Can I upload any song?
Only audio you created, own, or have permission to transform — released and commercial recordings may be rejected by the catalog check, while songs from your MuseSong Library are always accepted. One upload up to 4 minutes is free to try; after that, uploads need a paid plan or credit pack.
What formats and length are supported?
Upload MP3, WAV, M4A, FLAC, or OGG: up to 4 minutes with Starter and current one-time packs, or up to 8 minutes with Pro and Studio. Previous purchases retain their original upload limits.
Can I use the result commercially?
Pro, Studio, and the Large or Mega credit packs include commercial use of what you generate — monetised videos, podcasts, games, and client work. Starter and the Small and Medium packs are for personal use. You always need the rights to the lyrics or audio you provide; AI processing does not clear third-party rights.
Add the part your song is missing
Choose a direction, pick a track, and compare the results.