Jim O'Rourke is an American musician, instrumentalist, composer, singer-songwriter and record producer. He is best known for his numerous solo and collaborative music projects, many of which are instrumental, and has been acclaimed for his music that spans varied genres, including avant-garde styles such as ambient, noise and minimalism, and styles of rock like indie rock and post-rock. He has been associated with the Chicago experimental and improv scene, as well as with New York City when he relocated there in 2000 for his tenure as a member of American indie rock band Sonic Youth.