Stephen Lambe is an author, publisher and festival promoter. He is an acknowledged expert on progressive rock, having written the best-selling Citizens Of Hope And Glory – The History Of Progressive Rock for Amberley in 2011 – and has discussed the subject on BBC Radio. He has co-hosted the Summer's End Progressive Rock Festival since 2006 and is a former Chairman of the Classic Rock Society. His first live concert – of many hundreds – was Yes at Wembley Arena in 1978. He lives in Tewkesbury in Gloucestershire, UK.