 "), while Episode 8 featured cameos by "L.A. Law" stars Jimmy Smits and Michele Greene.The series' theme song, "Under the Gun", was written by Randy Newman, who also performed it in the series' title sequence music video-style in a recording studio, complete with a full backing band and the show's cast (appearing out of character) serving as an audience.Mike Post, who served as "Cop Rock"s music supervisor, was also part of Newman's band in that opening sequence; Post is the keyboardist in dark glasses sitting next to Newman.