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Ian Bryce Wallace OBE (10 July 1919 – 12 October 2009) was an English bass-baritone opera and concert singer, actor and broadcaster of Scottish extraction.
His family intended him for a career in the law, but he was attracted to the stage. Originally an actor in non-musical plays, he was persuaded to try opera and made an immediate success. He played a range of buffo parts in operas, at Glyndebourne and internationally. Wallace maintained a simultaneous career in revue, straight theatre, and broadcasting. He appeared in pantomime and at the Royal Variety Performance. As a broadcaster, he was a long-time panellist on the BBC radio panel game My Music, and he presented a television series of introductions to operas in the 1960s, as well as appearing in light entertainment shows singing a range of songs from ballads to comedy numbers. He performed his one-man show for many years. Flanders and Swann wrote several songs for him, and their best-known novelty song, "The Hippopotamus", became indelibly associated with him.