Opera singers and directors, ballet dancers, classical recitalists, jazz and pop artists have all visited Philadelphia in the last four decades. Tom Di Nardo had the opportunity to interview many of them, discovering the stories behind the artists who fill the halls.There are adventures with Luciano Pavarotti, Mel Torme, Betty Comden and Adolph Green and Denyce Graves, and interviews with Renee Fleming, Stephane Grappelly, Sarah Chang, Bill Evans,...