This isn’t a library question, but it does have to deal with the music biz. If you were to write music directly for an ad agency would you need to supply your own contract, and should you consider it an exclusive work for hire?
Yes to first question, very likely yes to the second, unless the deal is that you retain ownership of the music (license for a set period of time).
Also, an ad agency that works on big budget projects will likely require you to get a big errors and omissions insurance policy. They like to push you to the limit when copying the temp, and want you to be the one liable 🙂
They like to push you to the limit when copying the temp, and want you to be the one liable
Pretty much the same when you vouch that your music is original and agree to indemnify the libraries where you sell your tracks. You’re on the hook if your sound-alike cuts too close, not the library.