Whats a rhythm heaven game?

@Adrian(PN), rhythm heaven is a game where you do certain actions(usually by pressing a button or swiping on a touch screen) to a beat. it was a ds game; later entries inglude rhythm heaven fever(wii) and rhythm heaven megamix(3ds).

Carter(the person whose post you and i commented on) is excited about Rhythm Heaven Groove, the next entry in the series, which will hopefully be coming out for the Switch or Switch 2. not really sure which.