Last night, Mariachi el Bronx visited The Tonight Show with Jay Leno to perform their cover of Bob Dylan's "Love Sick." The track is part of a compilation of covers that benefits Amnesty International on the eve of their 50th anniversary. Other participants include: Bad Religion, Billy Bragg, Cage the Elephant, Elvis Costello, Flogging Molly, My Chemical Romance, My Morning Jacket, Patti Smith, Queens of the Stone Age, Rise Against, Silversun Pickups, State Radio and The Gaslight Anthem.