[PAR] [TLE] Béla Bartók [SEP] Béla Viktor János Bartók ( ; ] ; 25 March 1881 – 26 September 1945) was a Hungarian composer, pianist and an ethnomusicologist.  He is considered one of the most important composers of the 20th century; he and Liszt are regarded as Hungary's greatest composers .  Through his collection and analytical study of folk music, he was one of the founders of comparative musicology, which later became ethnomusicology. [PAR] [TLE] Night music (Bartók) [SEP] Night music is a musical style of the Hungarian composer Béla Bartók which he used mostly in slow movements of multi-movement ensemble or orchestra compositions in his mature period.  It is characterized by "eerie dissonances providing a backdrop to sounds of nature and lonely melodies."
[PAR] [TLE] Béla Bartók [ SEP ] Béla Viktor János Bartók ( ; ] ; 25 March 1881 – 26 September 1945 ) was a Hungarian composer , pianist and an ethnomusicologist . He is considered one of the most important composers of the 20th century ; he and Liszt are regarded as Hungary 's greatest composers . Through his collection and analytical study of folk music , he was one of the founders of comparative musicology , which later became ethnomusicology . [PAR] [TLE] Night music ( Bartók ) [ SEP ] Night music is a musical style of the Hungarian composer Béla Bartók which he used mostly in slow movements of multi - movement ensemble or orchestra compositions in his mature period . It is characterized by " eerie dissonances providing a backdrop to sounds of nature and lonely melodies . "
What subject did the composer of night music start through his collection and analytical study of folk music?
What subject did the composer of night music start through his collection and analytical study of folk music ?
comparative musicology
comparative musicology