sentences:  Istemihan entered the Istanbul Conservatory at the age of eleven began violin instruction for one year, and changed his concentration to clarinet under the direction of Tevfik Çelen.In 1963 he transferred to Ankara State Conservatory and continued his clarinet education with Hayrullah Duygu.After he graduated with a music performance degree as a clarinet player he began pursuing his Master's and DMA degrees in music composition and theory under Adnan Saygun and Erçivan Saydam.