Jay Stuart Farrar is an American songwriter and musician currently based in St. Louis. A member of two critically acclaimed music groups, Uncle Tupelo and Son Volt, he began his solo music career in 2001. Beyond his established talents as a songwriter, he is a guitarist, pianist, harmonicist, and a vocalist.

New Multitudes is a Woody Guthrie tribute album performed by Jay Farrar, Will Johnson, Anders Parker, and Jim James to commemorate the 100th anniversary of Guthrie's birth, released through Rounder Records on February 28, 2012. The project was initiated by Woody's daughter Nora Guthrie to have Farrar add music to her father's lyrics—specifically, his earliest songwriting years in Los Angeles. Over the course of several years, he invited the others to collaborate and recorded at a variety of locations across the United States. Each artist wrote music to lyrics that inspired him and presented it to the collaborators for recording. The result is an album with diverse musical genres that has garnered positive reviews from critics for its varied styles and instrumentation. The quartet promoted the album with a small promotional tour that took them to record stores, radio programs, theaters, and folk festivals. The group has plans for releasing a second volume.