The title does indeed not make much sense, but I imagine OP is trying to ask: "What grown up music did you listen to that you, and not a grown up, put on."

Answering that question, the first artists I remember looking up and having on my phone/mp3 Player were 30 seconds to Mars, Foo Fighters, and Linking Park. The latter because it was all the rage when I first got into music, not because the songs were especially good.