Plot: In the fourth of this series of Henry Wood Promenade Concerts recorded at the Royal Albert Hall, London, Kiril Kondrashin , making his first appearance at the Proms, conducts the Amsterdam Concertgebouw Orchestra leader THEO OLOF Prokofiev Symphony No 1, in D major (Classical) Bartok Piano Concerto No 3 soloist Theo Bruins. Introduced by SHEILA TRACY