Jack Dorsey Jack Dorsey Jack Patrick Dorsey (born November 19, 1976) is an American computer programmer and Internet entrepreneur who is co-founder and CEO of Twitter, and founder and CEO of Square, a mobile payments company. Dorsey was born and raised in St. Louis, Missouri, the son of Marcia (née Smith) and Tim Dorsey. He is of English, Irish and Italian descent. His father worked for a company that developed mass spectrometers and his mother was a homemaker. He was raised Catholic, and his uncle is a Catholic priest in Cincinnati. He attended the Catholic Bishop DuBourg High School. In his younger
Tommy Dorsey Clambake Seven as a Dixieland group that played during performances, too. The Dorsey band had a national radio presence in 1936, first from Dallas and then from Los Angeles. Tommy Dorsey and his Orchestra took over comedian Jack Pearl's radio show in 1937. By 1939, Dorsey was aware of criticism that his band lacked a jazz feeling. He hired arranger Sy Oliver away from the Jimmie Lunceford band. Sy Oliver's arrangements include "On The Sunny Side of the Street" and "T.D.'s Boogie Woogie"; Oliver also composed two of the new band's signature instrumentals, "Well, Git It" and "Opus One". In