Hasan Uçarsu's technic of using traditional instruments and the left behind composed basing on these technics

Main subject of this study is to search the using of traditional Turkish music instruments in a contemporary music, referring to Hasan Uçarsu's "On The Back Streets of The Old İstanbul" and composing a new piece which includes traditional Turkish music instruments. This thesis consists the titles Introduction, literature research, method and technique, Hasan Uçarsu's biography and his approach to composing, and analysis of On The Back Streets of The Old İstanbul, Left Behind and conculution. Hasan Uçarsu's composition has been analyzed on the titles of form and melody, rhythm, polyphony and sound. "Left Behind" which has inspired from the first composition, has been composed for kanun, kemençe, violoncello and piano. This piece is also a pattern for using kanun in a polyphonic composition. However, "Left behind" does not include any quotation from the traditional Turkish maqam music. Each composition has different musical languages. Conculution part includes the explanation of using the traditional Turkish music instruments efficently in a polyphonic compositions which also means a new approach at musical studies. Keywords: Kanun, Polyphony, Hasan Uçarsu