Sort of like commissions, but more of an open commission to everyone? For example, someone could post something like

"I really need a rock song based around Gulliver's Travels. Will pay $500 for a finished quality work."

Or anything like that? I'm looking more for the classical aspect, but I imagined that it would sort of hold true for any of the composers on Musician's Talk.

This is exactly what you're looking for, I think.
Quote by dudetheman
So what? I wasted like 5 minutes watching DaddyTwoFoot's avatar.

Metalheads are the worst thing that ever happened to metal.