Svit. Among the post-1990 authors best known are Aleš Debeljak, Miha Mazzini, and Alojz Ihan. There are several literary magazines that publish Slovene prose, poetry, essays, and local literary criticism. Music The Slovenian Philharmonics, established in 1701 as part of Academia operosorum Labacensis, is among the oldest such institutions in Europe. Music of Slovenia historically includes numerous musicians and composers, such as the Renaissance composer Jacobus Gallus (1550–1591), who greatly influenced Central European classical music, the Baroque composer Joannes Baptista Dolar (ca. 1620–1673), and the violin virtuoso Giuseppe Tartini. During the medieval era, secular music was as popular as church music, including wandering minnesingers. By the time of Protestant Reformation in the 16th century, music was used to proselytize. The first Slovenian hymnal, Eni Psalmi, was published in 1567. This period saw the rise of musicians like Jacobus Gallus and Jurij Slatkonja. In 1701, Johann Berthold von Höffer (1667–1718), a nobleman and amateur composer from Ljubljana, founded the Academia Philharmonicorum Labacensis, as one of the oldest such institutions in Europe, based on Italian models. Composers of Slovenian Lieder and art songs include Emil Adamič (1877–1936), Fran Gerbič (1840–1917), Alojz Geržinič (1915–2008), Benjamin Ipavec (1829–1908), Davorin Jenko (1835–1914), Anton Lajovic (1878–1960), Kamilo Mašek (1831–1859), Josip Pavčič (1870–1949), Zorko Prelovec (1887–1939), and Lucijan Marija Škerjanc (1900–1973). In the early 20th century, impressionism was spreading across Slovenia, which soon produced composers Marij Kogoj and Slavko Osterc. Avant-garde classical music arose in Slovenia in the 1960s, largely due to the work of Uroš Krek, Dane Škerl, Primož Ramovš and Ivo Petrić, who also conducted the Slavko Osterc Ensemble. Jakob Jež, Darijan Božič, Lojze Lebič and Vinko Globokar have since composed enduring works, especially Globokar's L'Armonia, an opera. Modern composers include Uroš Rojko, Tomaž Svete, Brina Jež-Brezavšček, Božidar Kantušer and Aldo Kumar. Kumar's Sonata z igro 12 (A sonata with a play 12), a set of variations on a rising chromatic scale, is particularly notable. The Slovene National Opera and Ballet Theatre serves as the national opera and ballet house. Traditional folk music Harmony singing is a deep rooted tradition in Slovenia, and is at least three-part singing (four voices), while in some regions even up to eight-part singing (nine voices). Slovenian folk songs, thus, usually resounds soft and harmonious, and are very seldom in minor. Traditional Slovenian folk music is performed on Styrian harmonica (the oldest type of accordion), fiddle, clarinet, zithers, flute, and