Just 20 minutes into the Bayou Art Festival Sunday, the Memorial Park picnic ground is alive with attendees drifting tent to tent, talking to artists and admiring displays. Among the tinkle of glass wind chimes and chatter of passerby, Paul S. Namkung sits in a tent and plays a steady rhythm on his signature piece - a Big Butt drum. Proceeds from sponsorships and admissions - to the tune of $3.5 million in the festival's 46-year history - benefit several arts non-profits in the city, but all of the artist's revenue is returned to them directly, Henderson said.