I also find that Reggae music is very appropriate for the the whole prison-planet story. It’s beautiful rebel music with a variety of beats. At least, I feel better when listening to it when thinking about the prison-planet topic. I love songs like Coming In From the Cold by Bob Marley, especially with lyrics like, “would you let the system get inside your head again? No, no, no, no, no, no, no, Dread, no! Would you let the system make you kill your brother man? No, Dread, no!”
I feel that Bob Marley, The Wailers, Steel Pulse, Wailing Souls, etc are all great classics to start with, if interested.