Einar Aaron Swan (born Einar (Eino) William Swan) (March 20, 1903 – August 8, 1940) was an American musician, arranger and composer. Born of Finnish parents who had emigrated to the United States at the turn of the century, he was the second of nine children.Born in Massachusetts, his father was a keen amateur musician and before Einar Swan had entered his teens, he played violin, clarinet, saxophone and piano. At the age of 16 he was already playing in his own dance band, Swanie's Serenaders, and travelling around Massachusetts for three years. Swan's main instrument had been the violin but during this period he switched to alto saxophone. Around 1924, the bandleader Sam Lanin invited Swan to join his orchestra at New York's famed Roseland Ballroom, and Swan played with leading musicians such as cornettist Red Nichols, and members of The Charleston Chasers Vic Berton (drums) and Joe Tarto (tuba), with whom he soon started composing and arranging material for the orchestra. He also started arranging for the other resident band at the Roseland Ballroom, Fletcher Henderson's orchestra.After five months with Lanin, Swan joined Vincent Lopez's band in 1925 and went on tour to England. The band at that time also featured Mike Mosiello, Xavier Cugat and his old bandmate Joe Tarto. Shortly thereafter, the Bar Harbor Society Orchestra released "Trail of Dreams" credited to Swan and Klage.Around 1930 Swan stopped working as a musician and concentrated on arrangements, starting to work for radio programmes and bandleaders such as Eddie Cantor collaborator Dave Rubinoff and Raymond Paige.In 1931 he wrote "When Your Lover Has Gone" which was featured in the James Cagney film Blonde Crazy (1931). The song became a hit and has since been covered by many other performers such as Lee Wiley, Louis Armstrong, Ethel Waters, Billie Holiday, Sarah Vaughan and Frank Sinatra.In 1939, he composed "In the Middle of a Dream" with Tommy Dorsey and Al Stillman, which was recorded by Glenn Miller and Red Norvo.He died of a cerebral hemorrhage in Greenwood Lake, New York in 1940 at the age of 37.