Сыны анархии
Also in 2009, Perez recorded a cover of The Who's Slip Kid with heavy metal group Anvil, released on "Sons of Anarchy: North Country", a five-song EP featuring music from the FX television series "Sons of Anarchy". In 2012, Perez performed a cover of Stevie Wonder's, "Higher Ground" for the fifth-season soundtrack of 'Sons of Anarchy', along with Sons of Anarchy house band, The Forest Rangers.