Music lessons at Keir's expensive private secondary school would have been paid for though, so would indeed have been expensive.
However, the main point I'm making is not about music lessons - it's that he ISN'T a state educated non-posh boy as has been mentioned by several posters above.
He was privately educated at a fee-paying secondary school and then went to Leeds University and then on to Oxford University. He isn't a non-posh state boy. Nothing wrong with that.
Going to Oxford back in his day - was indeed a "posh" thing to achieve.
Nothing wrong with that, but it's a bit silly people keep saying he's state educated.