Jim O'Rourke (born January 18, 1969, Chicago, Illinois) is a Tokyo-based American musician, composer and record producer. He has released albums across varied genres, including singer-songwriter music, post-rock, ambient, noise music, and tape experiments. He was associated with the Chicago experimental and improv scene when in around 2000 he relocated to New York City, before moving to Japan, where he currently resides. O’Rourke is best known for his numerous solo and collaborative music projects, many of which are entirely instrumental, and for his tenure as a member of Sonic Youth from 1999 to 2005.