So I'm working on the birth of a record label that will be releasing old field recordings of local heritage type music. A decade or two ago my boss gave some of those recordings to County Records and they used some of them in a compilation. My boss has the original masters and nothing was signed when he handed over copies of the recordings. But just to be safe my boss has asked me to write some sort of "release of claim" contract (if that's what it's called) to send to County Records just so there is no way that they will try and get money if we use those songs. I just want any information as to how I should approach this. I have not written a single legal document in my life. Thanks!