Orchestra Game Pack idea

This... this could work. Get To Work already shows that it's possible for them to sync up many different Sims at once. Plus, I always welcome more music related activities in my Sims game. The game is, while I think its done personal instruments the best out of all the Sims games I've played, I would like to see more. Would this be a GP or an EP? If it's an EP, this could actually tie into a Showtime EP.