I found this out getting the rights for a song written in the 1940’s. What a twisted tale! The songwriters were long dead, and the song’s rights had been sold a couple of times since then. I FINALLY found the current copyright holder, Sony, but it took the better part of six months. I HAD to have permission to use a line, since my novel was split into sections mirroring Rachmaninoff’s Third Piano Concerto, and the rip off popular songs that each movement inspired. It was the whole reason for the book. Next time, I’ll just make up song lyrics.