What you need to do to get out of your contract depends on the what the contract says. There are sometimes ways to get out, for instance if he agreed to use his best efforts or reasonable efforts to promote you and isn't doing it. This is why you should have an attorney review your contracts before you sign them, because if there is no escape clause it could be difficult and expensive to get out. Have someone look over the contract, there may be something you can do but there is no way to tell without seeing the actual contract.
Answered on Dec 30th, 2012 at 12:19 PM