A couple of years ago, my friend Silas Stewart recorded an EP of classical music featuring percussion. He wrote one of the pieces, I wrote two, and he performed on everything with a slew of friends. One of the engineers for that session recently asked if he could sample one of my pieces, Evocations for alto saxophone and percussion, for a track by his hip-hop group Lamarr Family Values. I'm pretty stoked about how it turned out! Check it out.
I've done a fair amount of work that I haven't been paid for. Some of this was work for friends that gave me great experience and that I'm grateful to have been a part of. Some, looking back, was blatantly exploitative and it's obvious now that those I was working for (not with) didn't value my time or expertise.