Complex sentence: From 1978 to 1985 at Tokyo university of art, he majored in violoncello and while being at school, he also started playing the cello with Japanese pop-singer and working as a studio musician for radio, T.V., films, and albums.
Split into simpler sentences: From 1978 to 1985 at Tokyo university of art he majored in violoncello. While at school, he started playing the cello with Japanese pop-singer and working as a studio musician for radio, TV, films, and albums.