What is it with opera stars that they aren’t satisfied with their own extensive repertoire, and feel the need to try to belt out Broadway showtunes in their over-the-top, ridiculously stylized voices? David Patrick Stearns doesn’t like it one bit, not even when the offender is as critically acclaimed a performer as Renee Fleming. “So what if operatic vocal amplitude overwhelms the words, rhythm, and any number of other things? It sounds so pretty!”