structural:summarization
Origin

The sackbut appeared in the 15th century and was used extensively across Europe, declining in most places by the mid to late 17th century. It was used in outdoor events, in concert, and in liturgical settings. Its principal role was as the contratenor part in a dance band. It was also used, along with shawms, in bands sponsored by towns and courts. Trumpeters and trombonists were employed in German city-states to stand watch in the city towers and herald the arrival of important people to the city, an activity that signified wealth and strength in 16th-century German cities. These heralding trombonists were often viewed separately from the more skilled trombonists who played in groups such as the alta capella wind ensembles and the first orchestral ensembles, which performed in religious settings such as St Mark's Basilica in Venice in the early 17th century. The 17th-century trombone had slightly smaller dimensions than a modern trombone, with a bell that was more conical and less flared. Modern period performers use the term "sackbut" to distinguish this earlier version of the trombone from the modern instrument.

Composers who wrote for trombone during this period include Claudio Monteverdi, Heinrich Schütz, Giovanni Gabrieli and his uncle Andrea Gabrieli. The trombone doubled voice parts in sacred works, but there are also solo pieces written for trombone in the early 17th century.

When the sackbut returned to common use in England in the 18th century, Italian music was so influential that the instrument became known by its Italian name, "trombone". Its name remained constant in Italy (trombone) and in Germany (Posaune).

During the later Baroque period, Johann Sebastian Bach and George Frideric Handel used trombones on a few occasions. Bach called for a tromba di tirarsi, which may have been a form of the closely related slide trumpet, to double the cantus firmus in some liturgical cantatas. He also employed a choir of four trombones to double the chorus in three of his cantatas (BWV 2, BWV 21 and BWV 38), and used three trombones and a cornett in the cantata BWV 25. Handel used it in Samson, in Israel in Egypt, and in the Death March from Saul. All were examples of an oratorio style popular during the early 18th century. Score notations are rare because only a few professional "Stadtpfeiffer" or alta cappella musicians were available. Handel, for instance, had to import trombones to England from a Royal court in Hanover, Germany, to perform one of his larger compositions. Because of the relative scarcity of trombones, their solo parts were generally interchangeable with other instruments.