The cornett, cornetto, or zink is an early wind instrument that dates from the Medieval, Renaissance and Baroque periods, popular from 1500 to 1650. It was used in what are now called alta capellas or wind ensembles. It is not to be confused with the trumpet-like cornet.
The sound of the cornett is produced by lip vibrations against a cup mouthpiece. A cornett consists of a conical wooden pipe covered in leather, is about 24 inches long, and has finger holes and a small horn or ivory mouthpiece.
The ordinary treble cornett is made by splitting a length of wood and gouging out the two halves to make the gently conical, curved bore. The halves are then glued together, and the outside planed to an octagonal cross section, the whole being bound in thin black leather. Six front finger holes and a thumb hole on the back (like on the recorder) are bored in the instrument, and are slightly undercut. The socket for the mouthpiece at the narrow end is reinforced with a brass collar, often concealed by an ornamental silver or brass mount. The separate cup mouthpiece is usually made of horn, ivory, or bone, with a thin rim and thread-wrapped shank. Because it lacks a little-finger hole at the bottom, its lowest note is the A below middle C, though another tone lower could be produced by slackening the lips to flatten the note.
At least three existing specimens of bass cornett reside in the collection of the Musée de la Musique, Paris (see "external links" below).
Historically, two cornetts were frequently used in consort with three sackbuts, often to double a church choir. This was particularly popular in Venetian churches such as the Basilica San Marco, where extensive instrumental accompaniment was encouraged, particularly in use with antiphonal choirs. Giovanni Bassano was a virtuoso early player of the cornett, and Giovanni Gabrieli wrote much of his polychoral music with Bassano in mind. Heinrich Schütz also used the instrument extensively, especially in his earlier work; he had studied in Venice with Gabrieli and was acquainted with Bassano's playing.