DiffRhythm (description: https://aslp-lab.github.io/DiffRhythm.github.io/ and test: https://huggingface.co/spaces/ASLP-lab/DiffRhythm) generates music tracks with lyrics from the timed lyrics and a music snippet.
Tool for generating lyrics in CN or EN, instructions accepted in FR.
Export ogg, mp3 or wav.
Open source and unlimited.

Excerpts for testing: https://commons.wikimedia.org/wiki/File:Double_tracked_distorted_electric_guitar_playing_chords.ogg?uselang=fr and https://commons.wikimedia.org/wiki/File:Country_Boy_-_Meic_Stevens.ogg?uselang=fr