This is supported by evidence found among learning publications of 1868 and 1877 edited by Jose Eleuterio Suarez, Jose Viteri and Telesforo D'Aleman.
This is supported by evidence found among publications from 1868 and 1877 that intended to teach how to play such instruments. They were edited by Jose Eleuterio Suarez, Jose Viteri and Telesforo D'Aleman.