With exclusive access to the Cline estate, the film features rare performances of such Cline classics as "Walkin' After Midnight" "Three Cigarettes in an Ashtray," "Come On In," "I Fall to Pieces," "Crazy," "You Made Me Love You" and more.The documentary also features exclusive archival interviews with Cline's contemporaries and new interviews with a wide range of artists who have been influenced by Cline: LeAnn Rimes, Kacey Musgraves, Rhiannon Giddens, Wanda Jackson, Bill Anderson, Beverly D'Angelo, Callie Khouri, Reba McEntire, Mickey Guyton, Terri Clark and more.
| Actor | Role |
|---|---|
 Rosanne CashNarrator | Narrator |
 LeAnn RimesSelf | Self |
 Kacey MusgravesSelf | Self |
 Rhiannon GiddensSelf | Self |
 Wanda JacksonSelf | Self |
 Beverly D'AngeloSelf | Self |
 Callie KhouriSelf | Self |
 Reba McEntireSelf | Self |
| TTerri ClarkSelf | Self |
 Mickey GuytonSelf | Self |