<p>I don't know about contract law in America and I haven't studied Scots contract law for a while but if I remember correctly if you refused to fulfill your contractual obligations with the tv company you have a contract with they could ask the court to grant a specific implement order forcing you to fulfill your obligation with the tv company. </p><p> </p><p>
I can't remember being lectured on efficient breach and I couldn't find any cases involving efficient breach after a quick search so I don't think that theory has been tested in a court so I would not want to rely on that theory but I may be wrong with it. </p><p> </p><p>
The contract is between the tv company and the promotion, not the tv company and the previous head booker so the fact that you didn't sign the contract doesn't change anything.</p><p> </p><p>
I would also say that your company gaining a toxic reputation is realistic as I can't imagine many companies being willing to negotiate a company that they cannot trust to fulfill their contractual duties.</p><p> </p><p>
However, as I said at the start I don't know how it works in the USA and I am very rusty on Scots contract law so I may be wrong but if my memory serves me correctly that Adam has it right with television contracts.</p>