Adam Clayton is an Irish rock musician and the bass player of U2. As the bassist for U2, he released The Joshua Tree with the band. Beyond his work with U2, Clayton collaborated with Robbie Robertson on his self-titled album in 1987 and Sharon Shannon on her self-titled album in 1993. That same year, he took formal bass lessons in New York City. Clayton has appeared in the documentary films Leonard Cohen: I'm Your Man and U2: Innocence + Experience Live in Paris.