At the age of 20, Matsumura began his formal studies privately as a pupil of Yasuji Kiyose. He was hampered from attending a university because of a personal illness, but nevertheless went on to study with Ikenouchi and Akira Ifukube. He soon received recognition as an accomplished composer through winning both the first prize at the 1955 NHK Manichi Music Competition and the 24th Concours of Japan (1955) for his orchestral piece Joso to kyosoteki areguro (Introduction and Allegro concertante).
In 1957, Matsumura joined Ikenouchi's Shinshin Kai group. That same year he compos...