Sackbut eighteenth century; when it returned, the Italian term "trombone" became dominant. In modern English, an older trombone or its replica is called a sackbut. An older instrument generally differs from modern trombones by its smaller, more cylindrically-proportioned bore, and its less-flared bell. The bell section was more resonant (since it did not contain the tuning slide and was loosely stayed rather than firmly braced to itself). These traits produce a "covered, blended sound which was a timbre particularly effective for working with voices... zincks and crumhorns", as in an alta capella. The revived instrument had changed in specific ways. In
Musical instrument development needed for the complexity of music of the time. Trumpets evolved into their modern form to improve portability, and players used mutes to properly blend into chamber music. Beginning in the seventeenth century, composers began creating works of a more emotional style. They felt that a monophonic style better suited the emotional music and wrote musical parts for instruments that would complement the singing human voice. As a result, many instruments that were incapable of larger ranges and dynamics, and therefore were seen as unemotional, fell out of favor. One such instrument was the shawm. Bowed instruments such as