Plot: Broadcast of Prom 50: Beethoven, Stravinsky and Gerald Barry Katie Derham introduces the first of six weekly programmes celebrating the 125th anniversary of the Proms, featuring some of the most memorable concerts from the unrivalled Proms archive. Katie is joined by conductor Mirga Gražinyte-Tyla to mark Beethoven’s 250th birthday year with another chance to see her acclaimed Proms appearance with the City of Birmingham Symphony Orchestra from 2017