Barry Gibb has revisited some of his most iconic songs in the new album Greenfields: The Gibb Brothers’ Songbook (Vol. 1) — which is available now.

The 12 tracks include vocal contributions from Keith Urban, Miranda Lambert, Sheryl Crow, Little Big Town, and others, including Dolly Parton, who joins the former Bee Gees front man on “Words.”

In a behind the scenes video on the making of the track, Dolly admits that it’s one of her favorite Bee Gees songs. After asking Barry how long ago he wrote “Words,” he replied “40 years ago” to which Dolly joked that she’s heard it for 40 years, but never thought she’d get to sing on a version of it with him.

Also in the behind the scenes video, you can watch Barry and Dolly not only working on the song, but there’s a moment where Dolly thanks Barry for writing and producing her hit song “Islands in the Stream” which she sang with Kenny Rogers. The two also trade memories, and Barry notes that they are in the very same studio where Dolly recorded her own iconic songs “Jolene” and “I Will Always Love You.”

Check out the behind the scenes video with Dolly Parton and Barry Gibb, right here…

Photo courtesy of Getty Images