Bundrick was born in Texas and for many years toured and recorded with fellow Texan, vocalist Johnny Nash. Bundrick played on Nash's hit single and album "I Can See Clearly Now". 

Bundrick first worked with Pete Townshend in 1977 when he performed on Rough Mix, Townshend's solo collaboration with Ronnie Lane, former bass player for Small Faces and Faces. He was invited to play on the Who Are You album, but broke his arm falling out of a taxi at the studio door and was unable to participate in the recording. Bundrick toured with The Who in 1979-1981, with another former member of the Faces, drummer Kenney Jones, and played on their album Face Dances. Though briefly alienated from the band during the recording of It's Hard (and the subsequent tour) in favour of keyboardist Tim Gorman, apparently due to disagreements with Townshend about Bundrick's drinking, Bundrick later rejoined the band (he performed with them at Live Aid in 1985) and has played live with them for over 20 years (though he was notably absent from The Who's well-reviewed performance at The Concert for New York City, the keyboardist spot having been filled by occasional Who keyboardist Jon Carin). Bundrick played on the Who's 2004 recordings "Real Good Looking Boy" and "Old Red Wine," and their 2006 album Endless Wire and the 2006 summer and fall portions of The Who Tour 2006-2007.

John sat out the start of the second leg of the North American portion of the tour due to the illness of his wife Sue. According to Pete Townshend, Sue was "very close to the end, and [Rabbit] will be back with us when she's gone." Sue died on 9 April 2007, and her funeral was held on 19 April, in the West Country. Until his return, his keyboard tech, Brian Kehew, took over keyboard and piano duties for the tour.

John performed at the VH1 Honors The Who taping in Los Angeles on 12 July 2008. He has re-married.\

source: Wikepedia