Thomas Francis Dorsey Jr. (November 19, 1905 – November 26, 1956) was an American jazz trombonist, composer, conductor and bandleader of the big band era. He was known as the “Sentimental Gentleman of Swing” because of his smooth-toned trombone playing. His theme song was “I’m Getting Sentimental Over You“. His technical skill on the trombone gave him renown among other musicians. He was the younger brother of bandleader Jimmy Dorsey. After Dorsey broke with his brother in the mid-1930s, he led an extremely successful band from the late 1930s into the 1950s. He is best remembered for standards such as “Opus One“, “Song of India“, “Marie”, “On Treasure Island”, and his biggest hit single, “I’ll Never Smile Again“. Dorsey died on November 26, 1956, at his home in Greenwich, Connecticut, a week after his 51st birthday. He had begun taking sleeping pills regularly at this time, causing him to become heavily sedated; he choked to death in his sleep after having eaten a large meal. Jimmy Dorsey led his brother’s band until his own death from throat cancer the following year. At that point, trombonist Warren Covington became leader of the band with Jane Dorsey’s blessing as she owned the rights to her late husband’s band and name.

Born in Mahanoy Plane, Pennsylvania, Thomas Francis Dorsey Jr. was the second of four children born to Thomas Francis Dorsey Sr., a bandleader, and Theresa (née Langton) Dorsey.