Curious sound generators such as the Singende Säge, the Glas­har­monika or the Toy Piano have made it into the inner circles of pop­music. In the present day, their specific characteristics make them destined to be rediscovered by musicians and music lovers with a penchant for unusual sounds. Freak sounds are an important element for the musical mainstream. Without their impulses, the result would be stagnation and monotony. They open up new musical horizons and give space to diversity. "Are the dulcitone, trautonium, verrophone, toy piano, singing violins, melodica, zither and clavinet and their sometimes cranky users the freaks of the music world? Certainly not only. It becomes interesting when you look at them in the context of the progression of music history. Another Wagner book at a high level, suitable for studying, enjoying, learning, again aha-experiences are guaranteed (Jean Stand in Jazzthetik 1-2/2026) .