AceShowbiz -

Jack White supported Beck during a gig at the Providence Performing Arts Center in Rhode Island on Saturday night, July 26. Introduced as "best bartender in the world," the rocker made an appearance onstage, joining his pal for final songs "Pay No Mind" and "Loser".

As reported by Billboard, the former member of The White Stripes performed acoustic and provided background vocals for the songs. They were later joined by Sean Lennon on a tambourine for a medley of "Where It's At" and "One Foot in the Grave". Lennon also served as the opener, performing with his band Ghost of a Saber Tooth Tiger.

Beck is currently gearing up for the release of his LP "Song Reader". The album, which contains his sheet-music collection, features collaborations from some musicians including White, Jeff Tweedy and Jarvis Cocker among others. The set will be available in stores on Tuesday, July 29 via Capitol Records.

White, meanwhile, has announced that he will make an appearance at Detroit's Comerica Park on July 29. In a Twitter post which was sent out on Friday, White said he would throw the first pitch at a game between Detroit Tigers and Chicago White Sox.