In 1993, the Kobayashi/Gray Duo won the USIA Artistic Ambassador audition, which led them touring through South America and the West Indies.
on April 21, 2000, an album featuring six works by Rebecca Clarke, Marie Grandval, Johanna Senfter, Serra Miyeun Hwang, Barbara Heller, and Grażyna Bacewicz.
The disc was a culmination of ten years of joint research and performances by the Duo of music for violin and piano by women composers.
The album consists of nine works by Meira Warshauer, Grażyna Bacewicz, Florence Price, Signe Lund, Anna Priscilla Risher, Emma Lou Diemer, Pauline Viardot, Vítězslava Kaprálová, and Elisenda Fábregas.
The disc is a mixture of Romantic and contemporary character pieces and sonatas written by composers of Spanish, French, Norwegian, American, African-American, Polish, Czech and Jewish-American heritages.