Listen to What Will Santa Claus Say (When He Finds Everybody Swingin') online. What Will Santa Claus Say (When He Finds Everybody Swingin') is an English language song and is sung by Louis Prima and His New Orleans Gang. What Will Santa Claus Say (When He Finds Everybody Swingin'), from the album Christmas Jazzin', was released in the year 2013. The duration of the song is 3:12. Download English songs online from JioSaavn.