Guns N' Roses guitarist Slash has updated Elton John's "Rocket Man" in honor of a stuntman's attempt at Evel Knievel's jump across Idaho's Snake River Canyon.

Slash recorded the new version for use as the theme music for a Kickstarter campaign created to help fund Eddie Braun's daredevil project after receiving John's permission. Braun will use a 10,000 horse-power rocket on Sept. 17 in hopes of getting farther than Knievel did more than four decades earlier in a failed try on Sept. 8, 1974. The new rocket has been appropriately dubbed "Evel Spirit."

Each person who donates to the Kickstarter campaign will receive a download of "Rocket Man," performed by Slash, Myles Kennedy and the Conspirators at Sunset Sound Studio in Hollywood. "I approached the rock icon Slash, who I knew to be an Evel Knievel fan, and asked if he would be interested in being involved with my rocket project," Braun notes on his Kickstarter page. "He gave us the most awesome gift we could ever dream: a theme song!"

He says it was Slash's idea to include the song as a reward with every donation. "I'm so honored to have been given the most epic theme song, by the most epic guitarist of all time," Braun added.

Braun plans to live-stream his jump; viewers can donate $10 to watch his attempt on the same Kickstarter page. "Rocket Man" was originally featured on Elton John's 1972 album Honky Chateau, and reached the Top 10 in the U.S.

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