Das "Intervall-Griff-System"
by Hélène Segenreich-Pfeifer, Guido Adler, Guido Adler Collection
PianoMethodsFingeringCharts, diagrams
Writing a summary for young readers…
For young readers
Book data: Open Library
by Hélène Segenreich-Pfeifer, Guido Adler, Guido Adler Collection
Book data: Open Library