In honor of the 50-year anniversary of Johnny Cash‘s ‘Bitter Tears: Ballads of the American Indian’ album, several artists have joined together to re-record the tracks as an all-star tribute album to the Man in Black.

Gillian and Dave contributed to 6 of the 11 tracks, including “As Long as the Grass Shall Grow” and “Apache Tears (Reprise).” Click here to read more about the project on Rollingstone.com.