Down in New Orleans is a Super Rare Sapphire Action from Reign of Jafar #177. Cost 6.
(A character with cost 6 or more can exert to sing this song for free.) Look at the top 3 cards of your deck. You may reveal a character, item, or location card with cost 6 or less and play it for free. Put the rest on the bottom of your deck in any order.