The founding members attended the Toho Gakuen School of Music[1] in Tokyo, where they studied with Professor Hideo Saito.
They won the Grand Prix du Disque Montreux, "Best Chamber Music Recording of the Year" awards from both Stereo Review and Gramophone magazines, and seven Grammy nominations.
In addition to Deutsche Grammophon, for many years they recorded for RCA Victor Red Seal, also for Angel-EMI, CBS Masterworks, and for the last decade for Harmonia Mundi.
The group played on a collection of instruments made by the famous luthier, Stradivari.
The quartet disbanded at the end of the 2013 season, following the decision by the violist Kazuhide Isomura, an original member, and the 2nd violinist Kikuei Ikeda to retire.