@roger,
I say you hire the cricket or crickets on a 40 hours a week basis. Give them the full benefits package but don't promise them any overtime.
Tell them their hours WILL BE from 9:00 AM to 5:00 PM. They will not be paid after 5:01 PM regardless of whether they did not finish their work. Let them play their music during this time.
They will not be paid anything after the fact. So there is no incentive to keep you awake at night if they don't get paid. It's the American dream!
To get paid for doing the thing they love!
Win win! They're fully employed! You get to sleep at night! You can sell the music on iTunes and Amazon's MP3 store. The US' unemployment rate goes down!