The music of Armenia (հայկական երաժշտություն haykakan yerazhshtut’yun) has its origins in the Armenian highlands, dating back to the 3rd millennium BCE, and is a long-standing musical tradition that encompasses diverse secular and religious, or sacred, music (such as the sharakan Armenian chant and taghs, along with the indigenous khaz musical notation). Folk music was notably collected and transcribed by Komitas Vardapet, a prominent composer and musicologist, in the late nineteenth and early twentieth centuries, who is also considered the founder of the modern Armenian national school of music. Armenian music has been presented internationally by numerous artists, such as composers Aram Khachaturian, Alexander Arutiunian, Arno Babajanian, Haig Gudenian, and Karen Kavaleryan as well as by traditional performers such as duduk player Djivan Gasparyan. Traditional Armenian folk music as well as Armenian church music is not based on the European tonal system but on a system of tetrachords. The last note of one tetrachord also serves as the first note of the next tetrachord – which makes a lot of Armenian folk music more or less based on a theoretically endless scale. Armenia has had a long tradition of folk music since antiquity. During the Soviet era, Armenian folk music was taught in state-sponsored conservatoires – in 1978, influential kanon player and composer Khachatur Avetisyan founded the folk music department of the Komitas State Conservatory of Yerevan. Traditional instruments include the qamancha, kanon (box zither), dhol (double-headed hand drum, see davul), oud (lute), duduk, zurna, blul, sring, shvi, pku, parkapzuk, tar, dmblak, bambir, and to a lesser degree the saz. Other instruments often used include the violin and clarinet. The duduk is considered to be Armenia's national instrument, and among its well-known performers are Margar Margaryan, Levon Madoyan, Vache Hovsepyan, Gevorg Dabaghyan, and Yeghish Manukyan, as well as Armenia's most famous contemporary duduk player, Djivan Gasparyan.