Short but really well done radio piece on PHILADELPHIA VOICES on the BBC World Service, starting at 43:27 (https://www.bbc.co.uk/programmes/w172w71npzrxglp). The BBC packs a huge amount of information into this short interview, with musical examples. And after the interview, the journalist and two guests continue to discuss what was said about the new piece, about city field recording and about Philadelphia. Definitely worth a listen!
Opera of the Future 