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The crumhorn is a musical instrument of the woodwind family, most commonly used during the Renaissance period. In modern times, there has been a revival of interest in Early Music, and crumhorns are being played again.
The name derives from the German Krumhorn (or Krummhorn or Krumporn) meaning bent horn. This relates to the old English crump meaning curve, surviving in modern English in 'crumpled' and 'crumpet' (a curved cake). The similar sounding French term cromorne when used correctly refers to a woodwind instrument of different design, though the term cromorne is often used in error synonymously with that of crumhorn.
The crumhorn is a capped reed instrument. Its construction is similar to that of the chanter of a bagpipe. A double reed is mounted inside a long windcap. Blowing through a slot in the windcap produces a musical note. The pitch of the note can be varied by opening or closing finger holes along the length of the pipe. One unusual feature of the crumhorn is its shape; the end is bent upwards in a curve resembling the letter 'J'. Some people think[weasel words] this is so that the sound produced from the crumhorn is directed toward the player to improve the intonation in consort playing.
Crumhorns make a strong buzzing sound, but quieter than their conical-bore relatives the rauschpfeife and shawm. They have a limited range, usually a ninth. While it is theoretically possible to get the reed to overblow a twelfth above the fundamental note, this is extremely difficult because the reed is not held in the mouth (and even if done would result in a gap of two notes in the scale on historical instruments), and in practice all playing is confined to the fundamental series. Some larger instruments have their range extended downwards by means of additional holes, keys and sliders, and the pitch of the instrument can be lowered a perfect fifth by dropping the breath pressure (called "underblowing"). Some modern instruments have their range extended upwards to an eleventh by two keys. Crumhorns can be chromatically played by using cross-fingerings, except for the minor second above the lowest note.
Because of the limited range, music for crumhorns is usually played by a group of instruments of different sizes and hence at different pitches. Such a group is known as a consort of crumhorns. Crumhorns are built in imitation of the vocal quartet with soprano, alto, tenor and bass as a family, as was true of most instruments of the Renaissance. There are examples of higher and lower sounding instruments, of which the great bass is the only commonly used one. Modern instruments are pitched in C and F (Renaissance altos were usually pitched in g, continuing the distance of a fifth between sizes):
|size||scale range (modern crumhorn in parentheses)|
|Soprano||(c1) d1 – e2 (– f2)|
|Alto||(f0) g0 – a1 (– b♭1)|
|Tenor||c0 – d1 (– f1)|
|Extended tenor||G or A – d1|
|Bass||F – g0 (– b♭0)|
|Extended bass||C – g0|
|Great Bass||B♭– c0 or C0 – d0 (– f0)|
|Extended great bass||G– d0|
There are some pieces specifying crumhorns in two manuscript sets of partbooks prepared for the Prussian court band, including an anonymous setting of "D’Andernach auff dem Reine". Johann Hermann Schein included a Padouana für 4 Krummhörner for crumhorns in his collection Banchetto Musicale (1617), and Thomas Stoltzer wrote in a letter that he had composed his setting of Psalm 37, '"Erzürne dich nicht" (1526), such that the lower six of the seven parts could be played on crumhorns. Michael Praetorius suggested the use of crumhorns in some of his sacred vocal works as a possible alternative to trombones, dulcians and other instruments.