"We all recognize we are part of a continuum," Mr. Mayfield said. "When you hear a note by Trombone Shorty, you're hearing a note by Louis Armstrong. When you hear Dr. John, you're listening to James Booker. When you listen to Ellis Marsalis, you're listening to James Black. You're listening to all the folks who have come before who may not even still be here."
'Is that because of Katrina?'