Does almost everyone from top tier colleges go to grad school?

Yes, but if you’re trying to make it into the entertainment business, working in investment banking or management consulting is probably not a good game plan. You have to put in too many hours to have time to pursue your dreams.

Seriously, IMO, the best thing he can do is get involved with the music/creative scene at Harvard and become good friends with those a couple of years older. It’s all about networking.