There are so many more questions raised by this social experiment.
Did the commuters feel that their 'space' was impinged upon, albeit by one of such unquestionable talent?
Did the commuters feel that they did not have the right to enjoy and appreciate such beauty because they had not paid for the privilege?
Are many who attend concerts at say, $500 per ticket at 'appropriate' venues really there to partake of the beauty and splendour of the experience....or is their attendance actually keeping up with the Jones' in a league of high-brow upper-crust wankers who really wouldn't know (nor care) the difference between Vivaldi or Mozart.
Perhaps the experiment was attempting to place some negative spin on commuters who use public transport...demographic contexts related to lack of appreciation of the Arts.
Beauty is beauty...if I had been there, I would have missed my stop for sure and been moved to tears.