Edward Seckerson celebrates the centenary of Elisabeth Welch , who in the 1930s was the highest-earning female singer in Britain. Plus another great British singer, the "champagne soprano" Lizbeth Webb talks about her career, which included working for Ivor Novello and the first London production of Guys and Dolls in 1953. ADDRESS: Stage and Screen, Room 220. Broadcasting House, Queen Margaret Drive , Glasgow G12 8DG email: stageandscreen@bbc.co.uk