Plot: Christopher Trace and Valerie Singleton introduce a magazine programme for younger viewers, including Ballet for Athletes - David Blair, Premier Danseur of the Royal Ballet, assisted by David Morse, shows why dancers have to be fine athletes and how their exercises can help football, high jumping, hurdling, and all kinds of sport and The Swapping Song. David Blair and David Morse appear by permission of the General Administrator, Royal Opera House Covent Garden, Ltd