“Does the Playboy Jazz Festival still feature jazz music?” is one of those deceptively simple riddles that has arisen in recent years, à la Groucho Marx’s old game-show tease, “Who was buried in Grant’s Tomb?” They still do play jazz at the annual music festival, although many years the lineup has been dominated by mainstream pop and rock acts alongside more traditional jazz combos. This year, the headliners include R&B stylist Corinne Bailey Rae, rapper Common, soul diva Lalah Hathaway and TajMo’ (a duo with blues icon Taj Mahal and Keb’ Mo’). But there is also a heavy dose of pure jazz on Saturday from bassist Marcus Miller (paired with vocalist Rahsaan Patterson), supergroup Hudson (featuring John Medeski, Jack DeJohnette, Larry Grenadier and John Scofield) and Arturo Sandoval. Sunday features Gregory Porter and Kenny Garrett, leavened with funky soul from Miles Mosley & the West Coast Get Down. Also Sunday, June 11.