In addition to his work with Young, Keith also worked with Terry Reid, Todd Rundgren, Lonnie Mack, The Band, Blue, David Crosby, Graham Nash, Paul Butterfield, J. J. Cale, Linda Ronstadt, Warren Zevon, Ian and Sylvia, Emmylou Harris, Willie Nelson, Waylon Jennings, Anne Murray and Ringo Starr. He also served as the producer of Jewel's debut album Pieces of You, and worked as solo artist. He toured with Crosby Stills Nash & Young on their 2006 Freedom of Speech Tour.