Jack Dorsey Chairman after Dick Costolo replaced Williams as the CEO. On June 10, 2015, Costolo announced that he was resigning as CEO of Twitter, effective July 1, 2015. Dorsey would assume the post of Interim CEO upon Costolo's departure. He was named permanent CEO of Twitter on October 5, 2015. On the day after the controversy about Twitter's new algorithms for tweets, Dorsey responded to the trend, saying it was only a hoax. In May 2016, Dorsey announced that Twitter would not count photos and links in the 140-character limit to free up more space for text. This move was an
Tommy Dorsey 1940, Dorsey hired singer Frank Sinatra from bandleader Harry James. Frank Sinatra made eighty recordings from 1940 to 1942 with the Dorsey band. Two of those eighty songs are "In the Blue of Evening" and "This Love of Mine". Frank Sinatra achieved his first great success as a vocalist in the Dorsey band and claimed he learned breath control from watching Dorsey play trombone. In turn, Dorsey said his trombone style was heavily influenced by that of Jack Teagarden. Among Dorsey's staff of arrangers was Axel Stordahl who arranged for Frank Sinatra in his Columbia and Capitol years. Another member