After selecting a song, tap the “…” button at the top left of the screen. Select “Settings” in the menu that just appeared from the bottom. The settings section view appears. You can then choose between the CDEFGA or Do Ré Mi Fa Sol La notations. German notation CDEFGAH (with B-> H, Bb -> B) is also available.
We are considering adding music notations from other languages, using for instance Musical Notation. Please feel free to contact us through the contact form to request a specific notation language.