He changed the wood for the body of moso-biwa from a soft wood back to a hard mulberry wood and made the instrument able to be played by striking it with a plectrum like the playing style of percussion instruments.
盲僧琵琶では柔らかな材を使うことが多かった胴を硬い桑製に戻し、撥で叩き付ける打楽器的奏法を可能にした。