System Of A Down's lead singer Serj Tankian is also a successful composer. Serj and another composer by the name of Ramin Djawadi collaborated for the Game Of Thrones: Season 8 Soundtrack. Click below to listen to "The Rains of Castamere."
While Serj was the only guest appearance on the 32 track score, he wasn't the only famous musician to jump on the G.O.T. train. Matt Bellamy from Muse recorded a a new song as a solo artist and it was featured on an album that was music collected and inspired by the show. "Pray" is Matt's first solo project and his band Muse played it as an interlude on the current "Hybrid Theory" tour. Watch below.