MusTeacH and LenMus projects are joining efforts to provide you with great tools for your music studies. MusTeacH is focused on providing free material for studying music online, but does not work off-line. On the contrary, LenMus is focused on providing software for desktop computers. Both projects, MusTeacH and LenMus, have similar aims and are complementary. Visit LenMus website (www.lenmus.org), were you can download the latest version of Phonascus for practicing music theory and training your ear.