Education
He studied music with Bernhard Scholz, Iwan Knorr, and Engelbert Humperdinck at the Hoch Conservatory in Frankfurt. He first studied piano with Ernst Engesser.
He studied music with Bernhard Scholz, Iwan Knorr, and Engelbert Humperdinck at the Hoch Conservatory in Frankfurt. He first studied piano with Ernst Engesser.
Jelmoli came from a wealthy Swiss family who founded a well known retailing business by the same name. From 1898 to 1899 he was the third director of the Staatstheater Mainz, and from 1899 to 1900 as the second director at the state theater in Würzburg. Upon returning to Zürich in 1900, he was active as a pianist, composer, and music critic (from 1906 to 1911 for the Zurich Post).
As a piano soloist, song recital accompanist, and chamber music player, he found much success in Switzerland and abroad.
Thanks to his extensive knowledge of languages, he was able to translate opera libretti for his composer colleagues.
He became a member of the selection commission of the Musical Academy of Zurich in 1920.