I believe the parent means, basically, "rock stars" (or "pop stars"/"country stars"/"rap stars"/whatever), the Locutus-like avatars of the music-industry, who are given songs written by the producer's songwriter and told that they're "theirs."

I think Japan is a lot more honest about this, in that these people are just called "idols" and aren't expected to originate any sort of authentic thought or message; they're just transparently icons in the employ of greater corporate forces, who go on talk-shows, and get talked about by paparazzi... and sometimes perform music.