The verrophone is comprised of glass tubes affixed vertically to a wooden frame. Touching the upper rim of the tubes causes the glass to vibrate, producing a tone. The pitch is determined by the length of the tube; the tuning is tempered and the tubes are arranged chromatically.

 

Because of its greater intensity of volume and its precise, clear tone colour, the verrophone is an ideal supplement to the glass armonica in contemporary concert practice, both as a solo instrument and in orchestral works.

 

The verrophone is one of the most outstanding inventions in the field of musical instruments since the saxophone.