LyricToMelody AI vs Sinsy

LyricToMelody AI turns lyrics or other musical ideas into melody drafts, AI vocal demos, and editable MIDI. Users can provide a verse, chorus, hook, or full lyric sheet and label sections such as verses, choruses, and bridges. Melody ideas are shaped around syllables, pacing, and song structure. Listed exports include MIDI, WAV, and MP3; Starter also includes PCM. The service describes its MIDI and audio workflows as working with Ableton Live, FL Studio, Logic Pro, Cubase, Studio One, and other DAWs. Other listed tools include MIDI-to-vocals, text-to-MIDI, multi-track generation, and vocal removal. Starter is free and provides 20 starting credits with seven-day project retention. Creator costs $10 a month billed annually, or $120 a year, and includes 1,200 monthly refreshed credits, MIDI and audio export, commercial rights, and 30-day retention. Studio costs $30 a month billed annually, or $360 a year, with 3,600 refreshed credits and one-year retention. Files may be stored during processing and the retention period; projects and files can be deleted from the dashboard.

Sinsy is a free web service that generates singing vocals from musical scores. You upload a MusicXML score, choose a vocal, and adjust settings labeled ALP, VIB, and PIT; Japanese appears as a language option. The system uses DNN- and HMM-based synthesis to model characteristics such as pitch and timbre, rather than accepting vocal input. Sinsy was developed by the Tokuda, Nankaku, and Hashimoto Laboratory. Its version history lists version 5.1 on 2026/05/01, with fixes for parameter-panel and smartphone/tablet behavior. Earlier entries record compressed MusicXML upload support in version 4.4 on 2023/12/25 and the addition of Japanese DNN vocal f01027j_dnn_beta5 in version 4.5 on 2024/12/25. The service is listed for web and Linux. Its Free online synthesis plan costs nothing. The synthesis page says using the service implies agreement to its terms of use. The about page is available in Japanese and describes the research background and version history.