The sentence describes a situation where a pianist was listening to someone singing and was unable to tolerate the sound of their voice. The implication is that the singing was of poor quality and the pianist was not enjoying the experience.

It is possible that the singer was inexperienced or lacked proper training, leading to a less-than-ideal performance. Alternatively, it is possible that the singer was deliberately singing in a way that was displeasing to the pianist, perhaps as a form of artistic expression.

Regardless of the reason, the sentence suggests that the pianist was not enjoying the performance and found the singer’s voice to be particularly unpleasant.