You can't have bank holding companies acting as hedge funds. You can't have them taking a million-dollar pension plan for Joe Schmo the bus driver and treat it with the same risk appetite that you treat George Soros' pocket money. It's fundamentally ridiculous.
The role of the musician is to go from concept to full execution. Put another way it's to go from understanding the content of something to really learning how to communicate it and make sure it's well-received and lives in somebody else.