American singer-songwriter, pianist and guitarist, Dr. John performing at the Montreux Jazz Festival in Montreux, Switzerland, 1st July 1973. (Photo by Michael Putland/Getty Images)
Dr. John and the Nite Trippers perform during the 2013 New Orleans Jazz & Heritage Music Festival presented by Shell at Fair Grounds Race Course on April 26, 2013 in New Orleans, Louisiana. (Photo by Rick Diamond/Getty Images)
