Heffington was also a member of the bluegrass band Watkins Family Hour, recorded three solo albums, and was a session and touring musician for various artists, including Lowell George, Bob Dylan, Emmylou Harris, Jackson Browne, Victoria Williams, the Wallflowers, the Jayhawks, and Joanna Newsom.
[5][6] Heffington was a member of the first incarnation of Lone Justice, along with Maria McKee (vocals), Ryan Hedgecock (guitar), and Marvin Etzioni (bass).
[7][8] In spite of being the group's second drummer, he joined early enough in its existence that McKee spoke of him as an "original member",[5] adding how Heffington was the only one she "never had any drama with".
Other members include Sebastian Steinberg (bass), Greg Leisz (pedal steel), Benmont Tench (piano), and David Garza (guitar).
[9][10] Heffington has played and/or recorded with many artists, including Dave Alvin,[11] Peter Case,[12] Vic Chesnutt,[13] Delia Bell,[14] Sheryl Crow, Bob Dylan,[15] Kathleen Edwards,[16] Lowell George,[17] the Jayhawks,[18] Rickie Lee Jones,[19] Sam Phillips,[20] Ron Sexsmith,[21] Percy Sledge, Big Mama Thornton, Big Joe Turner, the Wallflowers, Lucinda Williams,[22] and Dwight Yoakam.
[2][5] With Amy Allison With Dave Alvin With Neal Casal With Peter Case With Vic Chesnutt With A. J. Croce With Bob Dylan With Marvin Etzioni With Tony Gilkyson With Jimmie Dale Gilmore With Barry Goldberg With Lone Justice With Christy McWilson With Buddy Miller With Fernando Ortega With Sam Phillips With Amy Rigby With Adam Sandler With Ron Sexsmith With Rick Shea With Victoria Williams With others