Lincolnshire Posy is a musical composition by Percy Grainger for concert band commissioned in 1937 by the American Bandmasters Association. Considered by John Bird, the author of Grainger's biography, to be his masterpiece, the 16-minute-long work has six movements, each adapted from folk songs that Grainger had collected on a 1905–1906 trip to Lincolnshire, England. In a similar fashion to these folk songs, many of the movements are in strophic form. The work debuted with three movements on March 7, 1937 performed by the Milwaukee Symphonic Band, a group composed of members from bands including the Blatz Brewery and Pabst Blue Ribbon beer factory worker bands in Milwaukee, Wisconsin.