Recommended Free Tools
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For a song built around a changed or synthetic singing voice, start with a tool whose stated workflow matches the job: Creatune or MemoTune for revoicing a song, Kits AI or Audimee for converting vocals, and Applio or RVC WebUI for model-based conversion. Use only a voice you own or have permission to use, and check the tool’s terms and the rights for the song and recording before release. Make the synthetic or converted performance clear to listeners as a matter of responsible disclosure; these supplied product details do not establish a platform’s disclosure rules or a legal requirement.
Which Song Voice Tool Fits The Job?
| Rank | Tool | Supported song-voice use | Rights information established here |
|---|---|---|---|
| 1 | Creatune | Re-perform a track with another voice or style | Use only material you own or have permission to adapt; tool grants no rights in third-party recordings |
| 2 | MemoTune | Replace a song’s vocals with a chosen voice model | Upload audio only if you have the right to use it |
| 3 | Kits AI | Custom voices and vocal conversion | Vendor says its model voices are ethically licensed and securely sourced; check terms for your release |
| 4 | Audimee | Vocal conversion with royalty-free voices or your own trained voice | Vendor describes voices as royalty-free; check terms for the selected voice and release |
| 5 | Applio | AI covers and voice conversion, including custom model training | Vendor says Applio may be used commercially; that does not establish rights to a voice, song, recording, or model |
| 6 | RVC WebUI | Local real-time or offline voice conversion | Product facts do not establish release rights for a particular voice, model, song, or recording |
| 7 | UtaiSynthesizer | Local voice-conversion and vocal-synthesis workflow | Commercial use is restricted across some model weights |
| 8 | LALAL.AI | Voice changer and voice cloner for music | Product facts do not establish release rights for a particular voice, song, or recording |
| 9 | VOCALOID6 | Singing generation and replication of your singing style | Product facts do not establish release rights for a particular voicebank, song, or recording |
| 10 | LyricToMelody AI | Sung drafts from lyrics or MIDI, with custom singing-voice training | Commercial rights are included on paid plans; check the plan terms and voice permissions |
Ranked AI Voice Generators For Songs
1. Creatune — Best For Re-Performing A Track You Have Rights To
Creatune is the clearest fit when the source is an existing track and the aim is a new vocal performance or style. Its stated workflow takes a library track or an upload you have rights to, then creates a new rendition with a different voice or musical style. It also says you can create a model from your own singing for covers of songs you have rights to. That distinction matters: changing the performance does not itself clear the composition or recording.
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Example workflow: use a track you own or are authorized to adapt, select a different voice or style, then review the result and its release terms. Don’t use a recognizable real person’s voice without that person’s consent.
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MemoTune describes a song-cover workflow that replaces the original vocal with a selected voice model. It can train a reusable model from your clean vocal recordings, or let you choose from system models across 13+ languages. The supplied details do not establish what rights attach to each system model, so check its current terms before publishing.
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Example workflow: train from your own clean singing, choose a song recording you have the right to use, and replace its vocal. MemoTune specifically says to upload only audio you have the right to use.
3. Kits AI — Best For A Broader Vocal-Production Workflow
Kits AI combines custom voice creation and conversion with blending, separation, and mastering. Its site says model voices are ethically licensed and sourced through the artists, and describes its output as royalty-free. Those statements do not tell you whether a particular voice suits a particular release or whether your source song is cleared; check the applicable terms and voice permissions.
Example workflow: convert a vocal you recorded with permission to use the chosen model, then use the other vocal-production tools as needed. The supplied facts do not establish a specific song genre, so check the vendor’s site if you need a genre-specific workflow.
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4. Audimee — Best For Vocal Conversion And Harmony Work
Audimee offers vocal conversion, isolation, pitch editing, stem splitting, and a harmony maker that supports up to five harmony tracks. It describes its voices as royalty-free and also supports training your own voices. Its facts do not spell out the release rights for every selected voice or source recording, so verify those terms.
Example workflow: prepare a vocal recording you have permission to process, convert it to a chosen voice, and build harmonies if the arrangement needs them. Audimee is web-based; check the vendor’s site for any other workflow requirements.
5. Applio — Best For Free, Custom Voice-Model Experiments
Applio supports AI covers, custom voice-model training, and real-time or uploaded-audio conversion on a creator’s machine or in the cloud. Its site says Applio may be used, modified, and redistributed for personal, research, or commercial work. That permission concerns Applio itself; it does not grant permission to imitate a person or use a protected song or recording.
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Example workflow: train or select a model only with voice material you have permission to use, convert your own sung performance, and check the model’s provenance and release terms before sharing. Applio’s supplied facts do not identify a genre-specific singing model.
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6. RVC WebUI — Best For Technical Users Who Want Local Control
RVC WebUI supports real-time and offline conversion, single- and multi-speaker inference, model training and fusion, pitch controls, and batch processing. It is a self-hosted desktop setup with hardware-specific dependencies, so expect installation and model-management work. The supplied product facts do not establish general commercial rights for community or custom models.
Example workflow: convert a vocal performance you recorded yourself using a model whose creator has authorized your intended use. Before release, verify both voice-model permissions and rights to the composition and source recording.
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7. UtaiSynthesizer — Best For A Local Singing-Production Workflow
UtaiSynthesizer combines separation, voice conversion, synthesis, and model training in a Windows workstation with a piano roll, multitrack timeline, and node workflow. It is open source, but commercial use is restricted across some model weights. Confirm the terms for the exact weights you plan to use; the software’s open-source status does not settle those separate permissions.
Example workflow: build a vocal part in the local timeline, use a model whose terms permit your project, and export the result for further production. The supplied facts do not establish which model weights are appropriate for a commercial release.
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LALAL.AI lists a voice changer for music and a voice cloner built from your recordings and audio samples. Its desktop software is available for Windows, macOS, and Linux, and its VST plugin runs locally inside a DAW. The supplied facts do not establish permissions for a cloned voice or transformed recording; use material you are authorized to process and check the vendor’s terms.
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Example workflow: work from a vocal recording you have permission to use, transform it in the voice changer, then review the result in your production workflow. If the source is a released song, confirm rights for both the recording and composition before sharing a derivative version.
9. VOCALOID6 — Best For Generating A New Sung Part In A Vocal Style
VOCALOID6 generates singing from melody and lyrics, offers expression controls and harmony creation, and includes VOCALO CHANGER to replicate your own singing style as a VOCALOID voicebank. Its supplied language fact covers Japanese, English, and Chinese lyrics in one voicebank. This makes it a fit for producing a new vocal part or carrying your own style into a synthesized voice; the facts do not establish permission to reproduce another singer’s identity.
Example workflow: write lyrics and melody for a new part, shape its expression, and use your own singing data if applying VOCALO CHANGER. Check the terms for the voicebank and any source material before release.
10. LyricToMelody AI — Best For A Sung Draft Built From Lyrics Or MIDI
LyricToMelody AI generates a melody around lyrics, previews it with an AI singing voice, and exports MIDI and audio for DAW workflows. It also supports custom singing-voice training from uploaded or recorded vocals and exports separate stems. Commercial rights are included on paid plans, according to the supplied product details; the free Starter plan has 20 starting credits and seven-day project retention. Check the vendor’s terms for voice consent and the specific rights attached to your plan.
Example workflow: enter lyrics or MIDI for an original song, audition the vocal draft, and export it into a DAW for arrangement. For a real person’s voice, use recordings only with that person’s explicit permission.
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How To Make A Voice-Conversion Song Responsibly
- Choose the source carefully. Prefer your own vocal recording and a composition or backing track you own or are authorized to adapt. A voice tool does not supply rights in source material.
- Get voice consent. For a model based on another person, obtain their permission for the training material and intended use. Avoid presenting a conversion as an authentic performance by that person.
- Check the exact model and plan terms. Confirm whether the selected voice, model weights, plan, and intended release are covered. Product-level claims such as “royalty-free” or permission to use software commercially do not answer every question about source material or a particular model.
- Disclose the synthetic or converted vocal. Add a clear note in the release description or credits that the singing voice was generated or transformed with AI, and identify a real person only with their consent. The supplied facts do not establish a universal disclosure format.
- Keep a record of permissions. Save the relevant voice consent and source-material permissions alongside the project files so collaborators can understand what was authorized.
What To Verify Before Publishing
- Whether you have permission to use the voice recording and to create or distribute a model from it.
- Whether the composition, backing track, and original recording can be adapted and released in your intended context.
- Whether the exact voice model or model weights allow your planned use, including commercial release where relevant.
- Whether the vendor has a disclosure rule or release-specific terms that apply to your project.
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