Nicholas Valensi (born January 16, 1981) is an American guitarist, singer, songwriter and session musician. He is most famous for his role as lead and rhythm guitarist, as well as occasional backing vocalist and mellotron player, in the American rock band The Strokes. Valensi has also worked as a songwriter and session guitarist with various artists, including Sia, Blondie, Brody Dalle, Regina Spektor and Kate Pierson. In 2013, he founded side-project CRX, for which he acts as singer, songwriter and lead and rhythm guitarist. Their debut album, New Skin, was released on October 28, 2016.