Both a beguiling portrait of the artist and an idiosyncratic self-portrait of the author, Mysterious Mozart is Philippe Sollers's alternately oblique and searingly direct interpretation of Wolfgang Amadeus Mozart's oeuvre and lasting mystique, audaciously reformulated for the postmodern age. With a mix of slang, abstractions, quotations, first- and third-person narratives, and blunt opinion, French writer and critic Philippe Sollers...