Jinnawat Mansap began his music studies with Mr. Prayut Chan-ak-sorn at Horwang school band in the position of Euphonium and Tuba player. He graduated from the Faculty of Music Education, at Chulalongkorn University. His major instrument is the Tuba that studied with Suraphon Thunyaviboon and Manit Bhuchacha-nok (principal Tuba of Bangkok Symphony Orchestra).
During his time studying at Chulalongkorn University, he always had much performance in chamber music, and solo Tuba, a member of the Thai Youth Orchestra, and a member of the Chulalongkorn University Orchestra from 1997 to 2002. In 2003-2005, Jinnawat went to Nagoya, Japan to play with Tenrikyo Aimachi Marching Band for the All Japan Marching Band Competition.
At present, Jinnawat is holding a Master’s degree in Music Composition from the Faculty of Fine Arts, Chulalongkorn University. He is a Brass instructor of Siamyth Drum and Bugle Corp, is a full-time lecturer at the department of music Kasetsart University, and do many arrangements and composition works for concert band and marching band in Thailand, Malaysia, Singapore, Hong Kong, China, and Japan.