Perhaps you were expecting Ms. Joplin? Don't be so disappointed. This version of the "Porgy And Bess" classic is performed by a Dutch prog rock group led by pre-Focus guitar god Jan Akkerman and a histrionic vocalist named Kaz Lux. The year is 1969. "Subtlety" did not sell records. And let's face it, when Kaz hits that falsetto "SkkkkyyyYY!" 80 seconds in, you're hooked.