Yasuko Yamaguchi was born in 1969 in Nagasaki, Japan and studied composition at Tokyo National University of Fine Arts and Music with Akira Kitamura, Hideo Kobayashi and Michio Mamiya. From 1997 she gone on with her studies at Robert-Schumann-Hochschule Düsseldorf with Manfred Trojahn, where Yasuko Yamaguchi received a Diplom in composition in 2000. She was a winner of such competitions as The 13th Kanagawa Art Festival Chorus Piece Competition (1989) and The 8th Competition for Young Composers by JSCM (1992). In 2005 she received the Düsseldorf Music Prize. She was also commissioned by Kunststiftung NRW, Tonhalle Düsseldorf, Dr. Karl Emil und Lilli Brügmann Stiftung and by Düsseldorfer Altstadt Herbst, for which she composed a orchestrapiece "Das Stehaufmännchen ist umgefallen" (1999). This work was nominated for the 10. Akutagawa compositionprize (2000) and in succession was performed by many famous japanese orchestras such as the Kyoto Symphony, the Orchestra Ensemble Kanazawa (those ware conducted by Hiroyuki Iwaki), the Yamagata Symphony Orchestra and the New Japan Philharmonic Orchestra. In December in 2003 was issued the CD 'Das untemperierte Klavier' (toypiano: Bernd Wiesemann, Cybele Verlag), for that was producted Yamaguchi's toypianopiece "Zuckerregen". In Februar in 2004 recorded her orchestrapiece "Das Stehaufmännchen ist umgefallen" on a CD of Orchestra Ensemble Kanazawa (Conducted by Hiroyuki Iwaki, Warner Music Japan). Her works have been performed by numerous ensembles worldwide, such as the e-mex neue musik ensemble, the notabu. ensemble in Düsseldorf, the Thürmchen Ensemble in Cologne, 175 East in New Zealand, De Ereprijs in the Netherlands, The New Japan Philharmonic Orchestra in Tokyo, Tokyo Sinfonietta, the Ensemble SoNoR in Azerbaidzhan, and were heard in many festivals, such as the 'The 19th Conference and Festival of Asian Composers' League 1998' in Taiwan, 'The International Gaudeamus Musicweek 1999' in the Neatherlands, 'The 14. Niedersächsischen Musiktagen 2000' in Hannover, 'The 7th International Youth Music Forum 2001' in the Ukraine, 'Klangspuren' at the Munich Biennale 2008, 'ADEvantgarde' 2009 in Germany, and 'Music From Japan Festival 2010' in New York. In May in 2007 in Dortmund and in September in 2008 in Düsseldorf she got her portraitconcerts for the chamber music. Yasuko Yamaguchi lives in Düsseldorf, Germany as a freelance composer.