I'm Sorry I Haven't a Clue down opportunities to work on it as he preferred to remain a listener. The official, authorised history of the show and ISIRTA, "The Clue Bible" by Jem Roberts, was published by Preface Publishing in October 2009. Humphrey Lyttelton, primarily known as a jazz trumpeter and bandleader, was invited to be chairman because of the role played by improvisation in both comedy and jazz music. In the first series Lyttelton shared the role of chairman with Barry Cryer but he made it his own (especially once Cryer replaced Cleese as a regular panellist) and continued as chairman until his death on
I'm Sorry, I'll Read That Again I'm Sorry, I'll Read That Again I'm Sorry, I'll Read That Again (often abbreviated as ISIRTA) is a BBC radio comedy programme that originated from the Cambridge University Footlights revue "Cambridge Circus". It had a devoted youth following, with live recordings being more akin to a rock concert than a comedy show, a tradition that continued to "I'm Sorry I Haven't a Clue". The pilot programme and Series 1 were broadcast on the BBC Home Service. Series 2–9 were broadcast on the BBC Light Programme (renamed BBC Radio 2 in September 1967). It was first broadcast on 3 April 1964,