Double‐reed woodwind instr., although made of brass, invented 1856 by Fr. bandmaster named Sarrus. Made in 9 sizes (in keys E♭, B♭, and C) from sop. to db. Saint‐Saëns and Delius (e.g. in Songs of Sunset, Dance Rhapsody No.1, Fennimore and Gerda, Arabesk, Song of the High Hills, Requiem, Eventyr) have scored for db. sarrusophone (usually played by double bn.).