This week we wish a happy 75th birthday to Malcolm John "Mac" Rebennack Jr., better known as Dr. John, a musical ambassador for the Crescent City. Born in New Orleans on Nov. 21, 1940, Dr. John began as a young man performing around town with his own bands. He introduced his Night Tripper persona on the 1968 album Gris-Gris, produced by Harold Battiste. In 1973, Allen Toussaint produced In the Right Place, which introduced the songs "Right Place, Wrong Time" and "Such a Night." Dr. John has won six Grammy awards and was inducted into the Rock and Roll Hall of Fame. His distinctive voice has graced the Disney movie The Princess and the Frog, sold Popeyes chicken ("Love That Chicken" jingles) and even inspired a Muppets character, Dr. Teeth. His most recent work is a tribute to Louis Armstrong.