I sense that you and I come from opposite ends of the spectrum regarding acting vs. singing. I always want to hear someone who can sing a role with something to spare rather than someone who acts his or her way through a part that they can barely sing. Different strokes for different folks. Raitt sang the role magnificently and in the Lincoln Center revival acted it with much more skill than his younger self brought to the table. Joshua Henry is an excellent mix for me, his singing strong, his acting quite decent, plus the supporting cast is his equal. Opera stars as Billy are always problematic and Nathan Gunn in the NY Philharmonic video hat began this stream is the weakest member of that cast, but he still holds his own. Samuel Ramey on a recording with Barbara Cook shows exactly how NOT to do it, gruesomely oversung and underacted in an opera sort of way.