^^When CD's were first released almost all the first generation were Compilations of successful bands from the 60's, 70's and 80's. It wasn't until much later that the discographies became available and since then they have released numerous Upgraded Remastered versions, so for those of us buying the new media, we sometimes had no choice but to buy the Greatest Hits and hope they eventually released all our favorite albums. They still have not completed the job, that is another reason the new USB turntables are popular, people can upload their old vinyl albums into MP3's etc., and enjoy them on their i-pods.