no clear evidence that this occurred. "Naldjorlak I", composed by Éliane Radigue for realisation exclusively by the cellist Charles Curtis, is in fact composed solely around the manipulation of the wolf tone of Curtis's cello. See also Mechanical resonance String resonance Violin acoustics References Wilkins, R.A.; Pan, J.; Sun, H. (Fall 2013). "An Empirical Investigation into the Mechanism of Cello Wolf-Tone Beats". Journal of the Violin Society of America. 24 (2). Wilkins, R.A.; Pan, J.; Sun, H. (Fall 2013). "An Investigation into the Techniques for Controlling Cello Wolf-Tones". Journal of the Violin Society of America. 24 (2). Sounds by type Resonance String performance techniques