Milton "Shorty" Rogers was an American jazz musician, one of the principal creators of West Coast jazz. He played trumpet and flugelhorn and was in demand for his skills as an arranger.
Shorty Rogers
The flugelhorn, also spelled fluegelhorn, flugel horn, or flügelhorn, is a brass instrument that resembles the trumpet and cornet but has a wider, more conical bore. Like trumpets and cornets, most flugelhorns are pitched in B♭, though some are in C. It is a type of valved bugle, developed in Germany in the early 19th century from a traditional English valveless bugle. The first version of a valved bugle was sold by Heinrich Stölzel in Berlin in 1828. The valved bugle provided Adolphe Sax with the inspiration for his B♭ soprano (contralto) saxhorns, on which the modern-day flugelhorn is modelled.
A standard 3-valved B♭ flugelhorn
A rotary valve flugelhorn