Doesn’t work – Learn That Song (REMIX Edition) — Slow down music, change the key, and loop [previously iLift] Review

What good is the app if it can’t work with the songs you have on Apple Music? Won’t work on all 352 songs that I have on my phone and can’t find where to get a refund.
Review by hhajek on Learn That Song (REMIX Edition) — Slow down music, change the key, and loop [previously iLift].