They are Japanese duo with guitar.
They started their activity in 1978 as "Masahide Matsumura and Gonzales Mikami". Mr. Matsumura was an employee of a company till 1988, and Mr. Mikami was also same till 1991. They were engaged in two trade at the same time.
Their songs are comfortable for the mind and the body. They are inapplicable in any category. It sometimes looks like Bossa Nova, sometimes Jazz or other categories. Therefore their songs are said "The most comfortable music on the Earth". Mr. Matsumura says "Hot Spring Music".
They were traded to music agent called Pony Canyon in 2001. They released "Guitars" as first album after trade.