Legal Question in Intellectual Property in California

The musical material you mention is certain to be copyrighted, and the rights will in most cases be owned by major music publishers or musician promotion companies. There are firms that specialize in determining who holds copyrights and then handling negotiations between the copyright holders and persons like yourself who have business ideas calling for some use of the copyrighted material. Many years ago, I represented a lady who was in the copyright-holder location and rights-negotiation business, but no longer have any specific information. I think most of them are in the L.A. area, some in New York and overseas, butmaybe you should start by searching the L.A. Yellow Pages (or an on-line equivalent) under headings such as "Copyright Services" or the like until you find someone who can handle your project cheaply and efficiently.