Diego Ares studied piano with Aleksandras Jurgelionis and Aldona Dvarionaitė. At the age of fourteen he was introduced to the harpsichord by Pilar Cancio. In 2002 he moved to Holland to work with Richard Egarr. Between 2004 and 2010 he studied at the Schola Cantorum Basiliensis. He perfected his technique with the harpsichordists Genoveva Gálvez and Carmen Schibli (disciple of Eta Harich-Schneider).
Ares has given recitals in Europe, Canada and Japan. He has recorded for Columna Música, Pan Classics, Harmonia Mundi and "All of Bach". His recordings have received awards such as the Diapason d'Or (three times), Classica's "Choc", Pianiste's "Maestro", Scherzo's "Exceptional", and the "Preis der Deutschen Schallplattenkritik". His latest recording, Bach's monumental Goldberg Variations, has been considered by several publications as a substantial contribution to the extensive discography of the work (Scherzo, Qobuz, CdClassico.com, etc.).
Diego Ares has taught harpsichord, fortepiano and basso continuo at the Hochschule der Musik in Trossingen (Germany) and at the Geneva Conservatory of Music.