(11/30/20) Called “the Beatles of comedy” by the Library of Congress, the four-man troupe Firesign Theatre wrote and performed together for over 40 years, but it is their sketches from between 1968 to 1975 for Columbia Records remains their best known and most influential. From “what’s all this brouhaha?” to “forward into the past!” or “your brain may no longer be the boss!” numerous phases from Firesign’s work on record and the radio (on WBAI affiliate KPFK) became a part of the popular lexicon. In this installment of Leonard Lopate at Large on WBAI, founding members Phil Proctor and David Ossman discuss the highs and lows of their four decades of making people laugh and think.