If you play violin, trumpet, or whatever, go for it. It's already copyrighted, so have a go and have fun.

A few months ago (years after it was finished), my cousin told me his girlfriend could sing. So I asked her to add vocables (see: "The Great Gig In The Sky"), but she never responded back after I sent her all my stuff, so that would be cool.

Enjoy.. I play all the instruments. Engineer, produce, mix, everything on my own. No computers. Just a Tascam DP-01 with a condenser micrphone.

https://www.youtube.com/watch?v=EUimy33lGbo