The Little Sweep—A Children's Opera in three scenes Op. 45: Scene Two: Later: X. Ensemble: "O why do you weep" (Rowan, Sam & Children) by Catherine Benson , Choral Scholars of King's College, Cambridge , Finchley Children’s Music Group , Cato Fordham , Sam Monck , Catherine Wearing , Mary Wells , The Medici Quartet , Philip Ledger