John Conant Flansburgh (born May 6, 1960), commonly called Flans or Flansy, is one half of the alternative-rock duo They Might Be Giants. In 1982, he co-founded the band with John Linnell, and continues to play a primary role in the duo as a songwriter, singer, and musician. Flansburgh primarily provides lead vocals and guitar for the band in recordings and at live shows, during which he often leads the band and provides frequent banter.
Courtesy of This Might Be a Wiki.