“Sitting under” is a phrase used in the Black Church. I remember my church’s former music director using that term when he left our church to work under the direction of a more accomplished choir master. Sitting under great keyboardists at churches in LA is how Gouche learned his approach to harmony. He used a colloquial expression from his community for a much more secular and diverse audience and it resulted in confusion, some innocent and probably some not so innocent. I did not read that thread so I am just speculating.I do know the phrase - it implies a level of extreme virtuosity, broad public reverence and multi-dimensional greatness of the individual and it is a phrase normally used by folks other than the teacher, i.e. the student : "I studied under so-and-so" or "... I was under so-and-so...". It is not usually used by a person about themselves - doing so can be very revealing in terms of their opinion of themselves, IMHO. YMMV