 These included William Demarest, an actor, saying he heard the word in 1908 as a young musician in San Francisco when the band was encouraged to play more energetically.Clarinetist Bud Jacobson said the word was used in Chicago to promote the Art Arseth band at the Arsonia Cafe in 1914.Fred R. Shapiro, editor of the "Yale Book of Quotations", found it applied to music in the "Chicago Daily Tribune" of July 11, 1915.