Since the money was 'legally' not Sol's, but belonged to the performers, I'd have offered to pass their names to Magpie....and I 'think', that if I were in Greg & Terry's position, I'd have sent them back half of it, just to make a point.
(what point? why, that they learned a valuble lesson from the time they spent there - that folk music often includes topical and protest songs, and that education is worth something....*grin*!)(you don't get a refund in college if you don't like the teacher's point of view)

I have seen Magpie several times...(back to even when there were 3 members)...and they are good folks and good musicians...but I don't go out of my way anymore, simply because I DO know what I'll hear and it's like 'preaching to the choir' for me. I don't mind topical songs, but prefer a program with a different balance for my $$$.

No obvious & simple answer to this one......