Brien Engel: Biography, recordings, and a curriculum guide for school performances by the glass harpist.
Glass Music: Musician Lynn Drye's information on history, the glass armonica, musical bowls, glass harp, glass xylophone, as well as her profile, performances, and recordings.
Glass Music: Profiles of Martin Hilmer and Beate Fürbache, their performance programs, historical development of glass music, and descriptions and photographs of musical glasses, the euphone, and the verrophone. [English/German/Japanese]
Peter Bennett: Concert glass harpist and street entertainer. Includes biography, performance schedule, sound clips, CD ordering, and a lesson plan for teachers.
Psyche Van Het Folk: Glass Instruments: Explanations, by Thomas Bloch, of the differences between the seraphim, glass harp, verillon, glass armonica, and glass harmonica.
The Chrysler Museum of Art: Grand Harmonicon: Photograph and history of the instrument developed and manufactured by Francis H. Smith in the early 1800s. Includes a score, resources, and brief discography.
The World of Glass Music: Profile of glass musician Clemens Hofinger, reviews, upcoming performances, and audio samples. Also includes history, photographs and descriptions of the armonica, glass harp, and verrophone. [English/German]