I'll tell the story about jazz guitarist Herb Ellis, probably not true, but the person who told me swore it was:

Before he joined Oscar Peterson, Herb Ellis played with Glenn Gray's Casa Loma Orchestra. One night after a show, Glen said to Herb," Why do you spend so much time tuning? You tune after nearly every number. I went tyo see Segovia play and he didn't have to tune more than twice all night."
"Well," said Herb, "Some cats just don't care."