 He was the author of the "Glasharmonika" article in the German music encyclopedia "Musik in Geschichte und Gegenwart".He designed and built his own instrument beginning in 1929 (aged 16), consisting of a set of wine glasses mounted in a wooden box, whose rims were rubbed to produce the tone.He appeared all over Germany and the British Isles, performing solo and with various chamber and orchestral ensembles, and during his lifetime was featured on innumerable radio and television broadcasts and several recordings (including Federico Fellini's "Casanova)".