Among these is a , which resembles a somewhat primitive sackbut without the bell joint. While he developed four models of the electronic sackbut, none ever saw commercial production. He was first taught by his father, John, who played the sackbut. Modern sackbut reproductions are usually soldered together. Eventually, the slide trumpet evolved into the sackbut, which evolved into the modern-day trombone. Many groups specializing in period music make frequent and prominent use of the sackbut. During the Renaissance, the equivalent English term was "sackbut". He was aided in this enterprise by a Flemish sackbut player, Hans Nagel. In addition to his violin works, he wrote music for the cornett, dulcian, and sackbut. The electronic sackbut is an instrument designed by Hugh Le Caine in the 1940s. In the King James Bible it is erroneously translated as "sackbut". Buckmaster brought more than strings&colon; he included the medieval instruments shawm and sackbut. In modern English, an older trombone or its replica is called a sackbut. Sackbut is the tavern keeper featured often in this play. Sackbut acts as a witness to the signing of consent by Tradelove.