Frank "Poncho" Sampedro is an American retired guitarist and member of the rock band Crazy Horse, known mainly for his longtime collaboration with singer-songwriter Neil Young. Sampedro has played and recorded with Young in many other configurations aside from Crazy Horse and earned co-writing credits on several Young songs. Out of all Young's musical collaborators, Sampedro has perhaps proven the most adept at working with the mercurial artist.

Rust Never Sleeps is the tenth album by Canadian American singer-songwriter Neil Young and his third with American band Crazy Horse. It was released on June 22, 1979, by Reprise Records and features both studio and live tracks. Most of the album was recorded live, then overdubbed in the studio, while others originated in the studio. Young used the phrase "rust never sleeps" as a concept for his tour with Crazy Horse to avoid artistic complacency and try more progressive, theatrical approaches to performing live.