Question: What is the name of a  kit violin and an opera?

full_context: Document 1: Euridice (Peri): Euridice (also Erudice or Eurydice) is an opera by Jacopo Peri, with additional music by Giulio Caccini. It is the earliest surviving opera, Peri's earlier "Dafne" being lost. (Caccini wrote his own "Euridice" even as he supplied music to Peri's opera, published this version before Peri's was performed, in 1600, and got it staged two years later.) The libretto by Ottavio Rinuccini is based on books X and XI of Ovid's "Metamorphoses"
Document 2: Violin: The violin is a wooden string instrument in the violin family. It is the smallest and highest-pitched instrument in the family in regular use. Smaller violin-type instruments are known, including the violino piccolo and the kit violin, but these are virtually unused in the 2010s. The violin typically has four strings tuned in perfect fifths, and is most commonly played by drawing a bow across its strings, though it can also be played by plucking the strings with the fingers (pizzicato). Violins are important instruments in a wide variety of musical genres. They are most prominent in the Western classical tradition and in many varieties of folk music. They are also frequently used in genres of folk including country music and bluegrass music and in jazz. Electric violins are used in some forms of rock music; further, the violin has come to be played in many non-Western music cultures, including Indian music and Iranian music. The violin is sometimes informally called a fiddle, particularly in Irish traditional music and bluegrass, but this nickname is also used regardless of the type of music played on it.
Document 3: L'Orfeo: L'Orfeo (SV 318) (] ), sometimes called La favola d'Orfeo ] , is a late Renaissance/early Baroque "favola in musica", or opera, by Claudio Monteverdi, with a libretto by Alessandro Striggio. It is based on the Greek legend of Orpheus, and tells the story of his descent to Hades and his fruitless attempt to bring his dead bride Eurydice back to the living world. It was written in 1607 for a court performance during the annual Carnival at Mantua. While Jacopo Peri's "Dafne" is generally recognised as the first work in the opera genre, and the earliest surviving opera is Peri's "Euridice", "L'Orfeo" is the earliest that is still regularly performed.
Document 4: List of Orphean operas: Operas based on the Orphean myths, and especially the story of Orpheus' journey to the underworld to rescue his wife, Eurydice, were amongst the earliest examples of the art form and continue to be written into the 21st century. Orpheus, the Greek hero whose songs could charm both gods and wild beasts and coax the trees and rocks into dance, has achieved an emblematic status as a metaphor for the power of music. The following is an annotated list of operas (and works in related genres) based on his myth. The works are listed with their composers and arranged by date of first performance. In cases where the opera was never performed, the approximate date of composition is given.
Document 5: Orpheus: Orpheus ( ; Greek: Ὀρφεύς ) is a legendary Thracian musician, poet, and prophet in ancient Greek religion and myth. The major stories about him are centered on his ability to charm all living things and even stones with his music, his attempt to retrieve his wife, Eurydice, from the underworld, and his death at the hands of those who could not hear his divine music. As an archetype of the inspired singer, Orpheus is one of the most significant figures in the reception of classical mythology in Western culture, portrayed or alluded to in countless forms of art and popular culture including poetry, film, opera, music, and painting.
Document 6: Classical violin in Cuba: The bowed string instruments have been always present in Cuba since its discovery, first as the viol or bowed vihuela and at a later time as the Italian violin. As other instruments and the culture in general, also the violin enjoyed in Cuba a period of great relevance during the 19th century. The violin was part of the instrumental ensembles that accompanied the Contradance and the Dance, the first Cuban musical genres, as well as other subsequent genres as the Danzón and the Cha cha cha. The violin also intoned some of the most beautiful melodies composed in Cuba, such as "La Bella Cubana" by José White. At all times, the Cuban violinists have been prominent representatives of the Cuban music throughout the entire world.
Document 7: Dafne: Dafne is the earliest known work that, by modern standards, could be considered an opera. The libretto by Ottavio Rinuccini survives complete; the mostly-lost music was completed by Jacopo Peri, but at least two of the six surviving fragments are by Jacopo Corsi. "Dafne" was first performed during Carnival of 1598 (1597 old style) at the Palazzo Corsi.
Document 8: Kit violin: The kit violin, dancing master's kit, or kit, is a stringed instrument. It is essentially a very small violin, designed to fit in a pocket – hence its other common name, the pochette (French for "small pocket"). It was used by dance masters in royal courts and other places of nobility, as well as by street musicians until around the 18th century. Occasionally, the rebec was used in the same way. Several are called for (as "violini piccoli alla francese" – small French violins) in Monteverdi's 1607 "Orfeo".
Document 9: La cetra (Vivaldi): La cetra, Op. 9, is a set of twelve violin concertos by Antonio Vivaldi, published in 1727. All of them are for violin solo, strings, and basso continuo, except No. 9 in B flat, which features two solo violins. The set was named after the cetra, a lyre-like instrument, and was dedicated to Emperor Charles VI.
Document 10: Baroque violin: A Baroque violin is a violin set up in the manner of the baroque period of music. The term includes original instruments which have survived unmodified since the Baroque period, as well as later instruments adjusted to the baroque setup, and modern replicas. Baroque violins have become relatively common in recent decades thanks to historically informed performance, with violinists returning to older models of instrument to achieve an authentic sound.
Document 11: Lost operas by Claudio Monteverdi: The Italian composer Claudio Monteverdi (1567–1643), in addition to a large output of church music and madrigals, wrote prolifically for the stage. His theatrical works were written between 1604 and 1643 and included ten operas, of which three—"L'Orfeo" (1607), "Il ritorno d'Ulisse in patria" (1640) and "L'incoronazione di Poppea" (1643)—have survived with their music and librettos intact. In the case of the other seven operas, the music has disappeared almost entirely, although some of the librettos exist. The loss of these works, written during a critical period of early opera history, has been much regretted by commentators and musicologists.
Document 12: Orfeo ed Euridice: Orfeo ed Euridice (French version: Orphée et Eurydice ; English: "Orpheus and Eurydice") is an opera composed by Christoph Willibald Gluck based on the myth of Orpheus, set to a libretto by Ranieri de' Calzabigi. It belongs to the genre of the "azione teatrale", meaning an opera on a mythological subject with choruses and dancing. The piece was first performed at the Burgtheater in Vienna on 5 October 1762 in the presence of Empress Maria Theresa. "Orfeo ed Euridice" is the first of Gluck's "reform" operas, in which he attempted to replace the abstruse plots and overly complex music of "opera seria" with a "noble simplicity" in both the music and the drama.
Document 13: Violin Sonata in D major (attributed to Mozart): The Violin Sonata in D major, K. deest, is a composition for violin and piano (or harpsichord) published in England during the 18th Century under the name of Wolfgang Amadeus Mozart. It is typical of many such works intended for use by amateur musicians in a domestic setting, with the attribution to a well known composer being used to boost sales. As with Mozart's earliest violin sonatas, the keyboard instrument is dominant.
Document 14: Sonatina: A sonatina is literally a small sonata. As a musical term, sonatina has no single strict definition; it is rather a title applied by the composer to a piece that is in basic sonata form, but is shorter and lighter in character, or technically more elementary, than a typical sonata. The term has been in use at least since the late baroque; there is a one-page, one-movement harpsichord piece by Handel called "Sonatina". It is most often applied to solo keyboard works, but a number of composers have written sonatinas for violin and piano (see list under Violin sonata), e.g. Sonatina in G major for Violin and Piano by Antonín Dvořák, and occasionally for other instruments, e.g. the Clarinet Sonatina by Malcolm Arnold.
Document 15: Santoor: The santoor is a trapezoid-shaped hammered dulcimer or string musical instrument made of walnut, with seventy-two strings. It is the national musical instrument of Iran, and is also native to Jammu and Kashmir. It dates back to ancient times, and was called "Shatha Tantri Veena" in ancient Sanskrit texts. A primitive ancestor of this type of instrument was used in Mesopotamia (1600-911 BC) and Babylonia.
ground_truth: L'Orfeo