Aya Sakou is a graduate of the Toho Gakuen School Of Music and the Musikhochschule Winterthur-Zurich, where she obtained diplomas in teaching and performance on the piano, and harpsichord under the guidance of Konstantin Scherbakov. She has won first prizes in competitions such as the Pitina Young Pianist Competition, The South Japan Piano Competition and the National Music Competition Of Japan.
As a chamber musician, she has been a member of the Tastro Quartet touring in Europe and Japan. She also participated in festivals such as the Yoshiwa Music Festival in Japan and the Vendsyssel International Music Festival in Denmark. She is also frequently performing as a chamber musician with musicians from the NHK symphony Orchestra, the Tonhalle Symphony Orchestra in Switzerland and the Singapore Symphony Orchestra, among others.
As a soloist, she has given many recitals in Europe and Japan. She has been invited to perform concertos with the Fontinu Chamber Orchestra and the Swiss Chamber Orchestra. In 2004-2005, the BBC radio broadcasted two of her recitals.
Since moving to Singapore in 2007, she regularly performs with the Singapore Symphony Orchestra (SSO) both in chamber and in the orchestra. She also works as an accompanist for SSO musicians, Singapore Armed Forces Band, festivals, master classes and at the Nanyang Academy of Fine Arts, while still pursuing an active career as an accompanist in Japan.