The fourth of five visits to the 1972 season of Henry Wood Promenade Concerts from the Royal Albert Hall John Pritchard conducts Waltzes and Polkas by the Strauss family and excerpts from Lehar's The Merry Widow and Johann Strauss's Die Fledermaus with Catherine Wilson (soprano) and the BBC Symphony Orchestra leader Eli Goren Introduced by Richard Baker (Part of the concert given on 12 August) (Next week: Gilbert and Sullivan) (Colour)