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For a free AI singing voice generator, start with LyricToMelody AI for sung drafts from lyrics or MIDI, Applio for voice conversion, or SightSinger for singing audio from a MusicXML score. Those are different jobs: a lyric-to-singing tool creates a vocal idea, a converter changes the voice in audio you provide, and a score tool turns written parts into singing. The ranked options below focus on those workflows and identify where free access is established.
Best Free AI Singing Voice Generators At A Glance
| Rank | Tool | Best Fit | Free Access | Input Or Workflow Established |
|---|---|---|---|---|
| 1 | LyricToMelody AI | Drafting a vocal melody from lyrics or MIDI | Free Starter plan; 20 starting credits and 7-day project retention | Lyrics or MIDI; sung vocal drafts, audio, MIDI, and separate stems |
| 2 | Applio | Free voice conversion and custom model workflows | Free and open source | Real-time or uploaded-audio conversion; custom model training |
| 3 | SightSinger | Turning a written vocal score into singing | Free plan; 8 credits reset monthly, about 4 minutes of audio monthly | MusicXML scores; SATB part selection and mixed-audio export |
| 4 | Kits AI | Voice conversion and vocal production | Free plan; 15 conversion minutes and 0 download minutes monthly | Voice cloning, conversion, blending, separation, and mastering |
| 5 | UtaiSynthesizer | A local Windows workflow for conversion and synthesis | Free and open source | Separation, RVC, SoVITS, synthesis, and model training |
| 6 | Uberduck | Generating singing from text | Free start is advertised; specific limits are not stated | Text-to-speech, singing, and rapping |
| 7 | DDSP-SVC | Open-source singing voice conversion | Free open-source project | Singing voice conversion; the project cautions to train models only with authorized data |
| 8 | Humlo | Training a personal voice model on iPhone | Free access and limits are not stated | Personal voice model training for singing; iPhone with iOS 16 or later |
| 9 | On4t AI Voice Cover | Browser-based cover experiments | Free version; premium options are available | Uploaded audio or YouTube URLs; language, emotion, and pitch controls |
| 10 | TopMediai AI Song Cover | Making covers with a custom voice model | Free generator is advertised; specific limits are not stated | MP3, WAV, M4A, or YouTube link; custom voice training from uploaded recordings |
| 11 | Audimee | Converting vocals and building harmonies | Initial 15 conversion minutes are a one-off introduction and do not reset | Vocal conversion, isolation, pitch editing, stem splitting, and harmony creation |
| 12 | VOCALOID6 | Desktop singing synthesis from melody and lyrics | 31-day free trial; no free plan | Melody and lyrics; Japanese, English, and Chinese in a single voicebank |
Ranked Picks For Singing Voice Work
1. LyricToMelody AI — Best For Drafting A Sung Vocal
Use this when you have lyrics, a MIDI melody, or both, and need to hear a vocal draft before committing to a full production. It can generate melodies and sung vocal drafts from lyrics or MIDI, and preview the melody with an AI singing voice. A practical starting brief is: “Sing these lyrics to the supplied MIDI melody; keep the phrasing clear and leave a short breath between the two lyric lines.” Treat that as a creative direction for your draft, not a promise of a particular style or genre. The free Starter plan has 20 credits to start, requires no card, and retains projects for 7 days. The web application exports MIDI, audio, and separate stems for DAW work. Commercial rights are included on paid plans; check the vendor’s terms for other uses. Visit LyricToMelody AI.
2. Applio — Best Free Voice Conversion Suite
Choose Applio when the singing performance already exists and you want to convert its voice, train a custom model, blend voice models, or run batch inference. It supports real-time and uploaded-audio conversion and has TTS, CLI automation, and self-hosting options. Its free, open-source suite runs on Windows, macOS, and Linux, with cloud options also described by the vendor. A simple conversion workflow is to prepare an authorized vocal recording, select a model you are allowed to use, convert the audio, then audition the result in your music project. Applio says the software may be used, modified, and redistributed for personal, research, or commercial work; that statement does not establish rights to a voice model or recording. Visit Applio.
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3. SightSinger — Best For Turning Scores Into Singing
SightSinger fits when your starting point is notation rather than a recorded singer or a text prompt. It converts MusicXML scores into AI singing audio, can split SATB parts with verse and part selection, and supports multitrack playback and mixed-audio export. This makes it a focused option for checking how written vocal parts may sound together. Its free plan provides 8 credits each month, described as about 4 minutes of audio or about one full song monthly. Supported languages include Mandarin Chinese, Cantonese Chinese, Japanese, Thai, English, Spanish, French, Italian, Portuguese, and European Portuguese. Commercial use is allowed royalty-free where permitted by the selected voice’s terms. Visit SightSinger.
4. Kits AI — Best For A Broader Vocal Production Workflow
Kits AI combines voice cloning and conversion with blending, separation, and mastering, so it suits creators whose singing workflow extends beyond changing a voice. Its free plan provides 15 conversion minutes, one voice slot, and zero download minutes per month. That zero-download allowance matters if you need an exported file: check the current plan details before building a project around free access. Kits describes custom AI singing voices and says its service offers royalty-free creation; artist-model outputs may need approval for commercial release, so check the relevant voice and platform terms. Visit Kits AI.
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5. UtaiSynthesizer — Best For A Local Windows Workstation
UtaiSynthesizer brings separation, RVC, SoVITS, synthesis, model training, node workflows, and multitrack timeline editing into a free, open-source Windows workstation. It can export WAV, FLAC, MP3, OGG, OPUS, and M4A. This is a fit for creators who want to manage models and processing on their own device, rather than a simple browser conversion step. The tradeoff is that you manage the local workflow yourself, and commercial use is restricted for some model weights; check the terms for each weight you use. Visit UtaiSynthesizer.
6. Uberduck — Best For Text-Driven Singing Experiments
Uberduck explicitly offers singing generation from text, making it the clearest pick here when you want to start with words rather than a score or a vocal recording. The vendor invites users to get started for free, but the available free limits are not stated here; check the site before planning a longer project. Commercial use is stated for paid plans. Visit Uberduck.
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7. DDSP-SVC — Best For Open-Source Singing Voice Conversion
DDSP-SVC is a free, open-source singing voice conversion project intended for personal computers. The project describes lower hardware requirements for training and synthesis than SO-VITS-SVC, and training time that can be shortened substantially compared with that approach. It is a technical project rather than a ready-made hosted generator, so expect to work with its software and models. The project specifically says to train models only with legally obtained, authorized data. Visit DDSP-SVC.
8. Humlo — Best For Personal Voice Training On iPhone
Humlo describes a workflow that trains a personal AI voice model from 30 seconds of singing, ready to sing on a track. The listed device support is iPhone with iOS 16 or later. Free pricing and usage limits are not established here, so check the vendor’s site before assuming you can complete a project without payment. Use only recordings and voices you have permission to use, and review the service’s terms for model and output rights. Visit Humlo.
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9. On4t AI Voice Cover — Best For Browser-Based Cover Experiments
On4t is a web tool for voice-cover conversion. It accepts uploaded audio and YouTube URLs and lists voice previews plus language, emotion, pitch, and algorithm controls. The free version has premium options, but a specific free usage allowance is not stated. The listed language choices are English, Arabic, Brazilian Portuguese, Chinese, Dutch, French, Hindi, Hungarian, Italian, Japanese, Korean, Polish, Russian, and Turkish. Check the vendor’s terms for rights to source recordings, selected voices, and generated covers. Visit On4t AI Voice Cover.
10. TopMediai AI Song Cover — Best For Custom Voice Models In A Cover Workflow
TopMediai advertises a free AI song cover generator and supports custom voice models trained from uploaded raw recordings. Its stated inputs include MP3, WAV, M4A, and YouTube links. The page does not establish a free-tier limit, so confirm the current allowance and terms before preparing a batch of covers. Get consent for any voice recording or model you use, and check the vendor’s terms for cover and commercial use. Visit TopMediai AI Song Cover.
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11. Audimee — Best For Vocal Conversion With Harmony Tools
Audimee combines vocal conversion with isolation, pitch editing, stem splitting, and a harmony maker that supports up to five harmony tracks. It also supports training your own voices. Its introductory 15 conversion minutes are a one-off allowance, not a monthly reset; paid Starter and Pro plans cap monthly conversion time. Audimee describes its voices as royalty-free, but check the terms for a trained voice and any cover before release. Visit Audimee.
12. VOCALOID6 — Best For A Free Trial Of Desktop Singing Synthesis
VOCALOID6 generates singing from melody and lyrics, with expression controls and a workflow for MIDI, VPR, WAV, VST3, AU, and ARA2. Its voicebank can sing lyrics mixing Japanese, English, and Chinese. It is a Windows and macOS desktop application with a 31-day trial and no free plan, so it belongs here as a trial option rather than a permanently free tool. The listed purchase price is $225 before tax. Review the selected voicebank and product terms for permitted uses. Visit VOCALOID6.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Choose The Right Singing Workflow
- Have lyrics or a melody: Begin with LyricToMelody AI for a sung draft from lyrics or MIDI, or Uberduck for text-driven singing.
- Have notation: Export or prepare a MusicXML score for SightSinger, then select the parts and verse you need to hear.
- Have a vocal recording: Compare conversion tools such as Applio, Kits AI, Audimee, or On4t. For cover workflows, TopMediai also documents audio uploads and YouTube links.
- Want a local model workflow: Consider Applio, DDSP-SVC, or UtaiSynthesizer, keeping each model’s data and use terms in view.
For a first vocal draft, keep the input concrete: provide the lyrics or melody, mark phrase breaks, and describe the desired delivery in plain musical terms such as “soft attack,” “hold the final note,” or “leave space after line two.” These are useful creative directions, not guaranteed controls; where a tool’s specific prompt controls or genre support are not established above, check its site. Before converting a recognizable person’s voice, uploading someone else’s recording, or releasing a cover, get the needed consent and check the platform’s terms for that voice, model, and use.
Quick Recap
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