MULTIPLE-PLATFORM INTERACTIVE PIANO LEARNING APP FOR STUDENTS & TEACHERS. "Piano eTutor" is a multiple-platform (mobile & laptop) piano learning app that introduces a totally new approach to piano learning which is completely technology-oriented. The common problems with learning piano have been solved in an intuitive and user-friendly way, thanks to the technologies that the app has tried to make the most of. You don't need to read a lot of theory to start playing. Just read a few lines of su