Plot: Broadcast of Prom 53: Beneath the Underdog: Charles Mingus Revisited A giant in 20th-century jazz, the legendary composer, bandleader and bass player Charles Mingus is celebrated by conductor Jules Buckley and his Metropole Orkest. Plus a brilliant line-up of soloists, including saxophonist Shabaka Hutchings, trumpeter Christian Scott and singer Kandace Springs, are on the bill