Peggy Stern is a musician's musician. She's made her mark in Philadelphia, San Francisco, New York City, Europe, Seattle and now Austin. Her multi-hued musical worldview includes classical, salsa, Latin rock, jazz and R'n'B. 'Z Octet' (Estrella Prod.) veers classical as a suite in 10 movements. But, just like it's not exactly jazz, it's not exactly classical either.