Sackbut Sackbut A sackbut is a type of trombone from the Renaissance and Baroque eras, characterised by a telescopic slide that is used to vary the length of the tube to change pitch. Unlike the earlier slide trumpet from which it evolved, the sackbut possesses a U-shaped slide, with two parallel sliding tubes, which allows for playing scales in a lower range. Records of the term "trombone" predates the term "sackbut" by two decades, and evidence for the German term "Posaune" is even older. "Sackbut", originally a French term, was used in England until the instrument fell into disuse in the
Regal Musical Instrument Company Regal Musical Instrument Company The Regal Musical Instrument Company was established in 1908 in Chicago. By the 1930s, they were one of the largest manufacturers of musical instruments in the world. Regal specialised in: Regal was heavily involved in the production of resonator fretted instruments from their first development until 1941, manufacturing components and bodies for both the National String Instrument Corporation and the Dobro Manufacturing Company and producing whole instruments which sold under many brand names including "Dobro". The bodies of their Laminated bellied guitars were particularly suited to resonator conversion. Production of resonator guitars ceased in 1941, and