Tommy Dorsey (November 19, 1905 – November 26, 1956) was an American jazz trombonist, trumpeter, composer, and bandleader of the Big Band era. He was known as "The Sentimental Gentleman of Swing" and as "TD". He was the younger brother of Jimmy Dorsey. His lyrical trombone style became one of the signature sounds of his band and of the swing era.
Thomas Francis Dorsey, Jr. was a native of Shenandoah, Pennsylvania, the second of four children born to Thomas Francis Dorsey, Sr. and Theresa (née Langton) Dorsey. The Dorsey brothers' two younger siblings were Mary and Edward (who died young).