Billions, the Showtime drama starring Paul Giamatti, Damien Lewis, and Maggie Siff returned to the air this past week for its fourth season. The show frequently highlights Rock and Metal music, with Lewis’ character Bobby Axelrod being a big fan of the style. Metallica appeared in a Season one episode. Bands are a frequent topic of debate in the show too. Motörhead’s classic and the title track of their 1980 album, ‘The Ace of Spades’ featured appeared in the season four debut. There was also a reference to AC/DC in 1978 was made as well. New episodes of Billions air on Sundays.