Still getting used to the term "rave" as it is used on AC. I think it is a variation of the music party where electronic dance (house, drum and bass, electronica, techno, etc) is played to a mass of youth typically in an unsanctioned/unlicensed location. Maybe AC's use is a parody on that? Or some other etymology?
BTW I've raved (my definition) back in the day, in the 90s in SF hence my comment above.
enjoy the music ~ed