was a commercial failure. With the future of his solo career in doubt, Clark briefly rejoined the Byrds in October 1967 as a replacement for the recently departed David Crosby; following an anxiety attack in Minneapolis, he left after only three weeks. During this brief period with the Byrds, he appeared with the band on The Smothers Brothers Comedy Hour, lip-synching the group's current single, "Goin' Back"; he also performed "Mr. Spaceman" with the band. Although there is some disagreement among the band's biographers, Clark is generally viewed as having contributed background vocals to the songs "Goin' Back" and "Space Odyssey" for the forthcoming Byrds' album The Notorious Byrd Brothers and was an uncredited co-author, with McGuinn, of "Get to You", also from that album. In 1968, Clark signed with A&M Records and began a collaboration with the banjo player Doug Dillard. Guitarist Bernie Leadon (later with The Flying Burrito Brothers and The Eagles), bassist Dave Jackson and mandolinist Don Beck joined them to form the nucleus of Dillard & Clark; in addition, Michael Clarke briefly drummed for the group before joining The Flying Burrito Brothers. They produced two albums, The Fantastic Expedition of Dillard & Clark (1968) and Through the Morning, Through the Night (1969). The Fantastic Expedition of Dillard & Clark was a pivotal work of acoustic country rock. It included such enduring songs as "Train Leaves Here This Morning" (a collaboration between Clark and Leadon prominently covered by the latter in 1972 on The Eagles' debut album) and "She Darked the Sun" (covered by Linda Ronstadt on her 1970 album Silk Purse). In contrast, Through the Morning, Through the Night was more indebted to traditional bluegrass but also employed electric instrumentation. By this juncture, Dillard's girlfriend Donna Washburn had joined the group as a backing vocalist, a factor that precipitated the departure of Leadon. The shift to traditional bluegrass also caused Clark to lose interest. Written by Clark, the title song was used by Quincy Jones in the soundtrack of the 1972 Sam Peckinpah film The Getaway; it was also covered by Robert Plant and Alison Krauss (along with "Polly," another Clark-penned track from the album) on their 2007 album Raising Sand. Both albums by Dillard & Clark fared poorly on the charts, but they are now regarded as seminal exemplars of the country rock and progressive bluegrass genres. The collaboration with Dillard rejuvenated Clark's creativity but