The Internationale Stiftung Mozarteum (ISM; International Mozart Foundation) has digitized Mozart’s music, and in this groundbreaking project is making it accessible to everyone on its web site. The ‘NMA Online’ is a digital version of the Neue Mozart Ausgabe (NMA; New Mozart Edition), a scholarly edition of Mozart’s complete works that was compiled by musicologists from around the world in the last 50 years. ‘NMA Online’ has been produced by the ISM in Salzburg in cooperation with the Packard Humanities Institute in Los Altos, California. It aims at facilitating the systematic research on Mozart for musicologists and performers as well as making Mozart’s scores available to non-specialists with a simple, user-friendly interface. The initiators have acquired all digital rights to the NMA from Bärenreiter-Verlag in Kassel, the publisher of the printed edition.