I built an app that turns any song into karaoke & auto-tunes your voice | MotTune

概要

I'm MOTSU, rapper of the Japanese group m.o.v.e — you might know my voice from the Initial D anime themes. I built an iPhone app called MotTune, and this is the full walkthrough. Grab any song from your phone: the AI separates the vocal from the backing track, reads the original singer's melody, and pulls YOUR voice onto that melody in real time. Karaoke, hard-tune, a full pitch editor — all on-device. Nothing gets uploaded. Your music never leaves your phone. 📱 Download MotTune (free, iPhone...