The Serenade for Tenor, Horn and Strings, Op. 31, is a song cycle written in 1943 by Benjamin Britten for tenor, solo horn and a string orchestra. Composed during the Second World War at the request of the horn player Dennis Brain, it is a setting of a selection of six poems by English poets on the subject of night, including both its calm and its sinister aspects. The poets Britten chose to set for the Serenade range from an anonymous 15th-century writer to poets from the 17th, 18th and 19th centuries.

Dennis Brain was a British horn player. From a musical family – his father and grandfather were horn players – he attended the Royal Academy of Music in London. During the Second World War he served in the Royal Air Force, playing in its band and orchestra. After the war, he was the principal horn of the Philharmonia and Royal Philharmonic orchestras, and played in chamber ensembles.