I'll be short and direct. How much should be payed an artist for a single sound track? Of course it depend on many factors first of all their curricula, who they are. So to be more precise or to make a comparison, take Ilaria Graziano (she cooperated with Yoko Kanno for some of Ghost in the Shell (and many more, which included Napple Tale for Dreamcast) lyrics..) as a standard... Thank you