Must have been about 1960, in Boston, probably Jordan Hall: A concert by Josh White. Nothing wrong with *him*, but he was afflicted with an impresario or handler or whatever you call such people (never mind what *I* call them) who took up at least half the time blathering & telling insipid dirty jokes. White stood it manfully. I tried to read a magazine, but that was hard in view of the low light & high noise levels. The memory is still painful.