Shadows, Op. 52, is an orchestral prelude by the Finnish composer Aulis Sallinen, who wrote the piece in 1982 on commission from the National Symphony Orchestra Association. The prelude's thematic material is closely related to Act III of Sallinen's third opera, The King Goes Forth to France, on which he also was at work in 1982, writing Shadows upon completion of Act II of the opera. Nevertheless, the composer has emphasized that Shadows is "an entirely independent orchestral work", albeit one whose "lyrical and dramatic ingredients reflect the philosophy of the opera". The National Symphony Orchestra (NSO) premiered the work on 30 November 1982 at the Kennedy Center in Washington, D.C., under the direction of its music director, Mstislav Rostropovich. Shadows so impressed Rostropovich an