After reading some of these comments, I wanna see this kind of thing happen in Sims 4... it'll definitely be something new! I mean, we've had bands before, but we've never been able to use recording studios and stuff. I think that would actually be cool. I think they should bring back the singing career too. Maybe they can make it where you choose if you wanna be in a band or if you just wanna be a solo singer. I honestly wouldn't mind a game pack (I think it's too small to be an expansion) that revolved around being a solo singer or in a band. I think it would also be a great opportunity to bring back the theater as well!
Better yet, why not make it a pack about entertainment in general? Maybe they can also include acting and directing (which will bring back the film career). A pack that revolves around entertainment would be awesome, honestly.