Yasunoshin Morita (b. 1969) studied composition under the guidance of Yori-Aki Matsudaira. Morita won the first prize at the competition of the Japan Society for Contemporary Music in 2002, the highest prize at the Valentino Bucchi International Composition Competition in Italy in 2009 and the Excellence Award in the Composition Prize for Orchestra of Japan in 2003. He also won the Young Composers Award of ISCM World Music Days 2013 in Vienna, and was invited to World Music Days 2017 in Vancouver as a guest composer. He gave lectures about Japanese traditional music including Gagaku at the Conservatoire Supérieure de Musique de Paris.
Les animaux à métamorphoses is a 2009 duo for violin and violoncello that was first performed on 9 November 2009 at Tokyo Opera City Recital Hall in Tokyo, Japan by violinist Yasutaka Hemmi and cellist Tomoki Tai, the performance featured here. Over the course of the performance, the playing styles of the violin and cello gradually transform.