EXCLUSIVE: Dierks Bentley's Amazing Johnny Cash Cover Gets an Assist from Taylor Hicks

Work that harmonica!

Dierks Bentley teamed up with an unlikely partner to cover the late, great Johnny Cash: American Idol season five winner, Taylor Hicks.

Bentley provided the vocals and guitar-strumming on Cash's "Folsom Prison Blues" during a high-energy set at the 24th annual "Deer Valley Celebrity Skifest," with Hicks lending a hand on the harmonica. Preview the performance exclusively in the player above!

WATCH: Dierks Bentley and Miranda Lambert Bust Out the '90s Gear for Cover Band Show – You NEED to See This

The one-hour special airs on Sunday, Dec. 13, at CBS Sports at 5 p.m. ET, adjacent to NFL Football. This year's star-studded event raised more than $500,000 for Robert F. Kennedy Jr.'s Waterkeeper Alliance, which is dedicated to protecting fresh water resources around the globe.

Meanwhile, 40-year-old Bentley continues his reign as Country's Hottest Guy -- as he was dubbed this past summer. See the singer and his wife adorably react to the title in ET's interview below.