Listen to 'Zat You, Santa Claus? online. 'Zat You, Santa Claus? is an English language song and is sung by Louis Armstrong. 'Zat You, Santa Claus?, from the album Merry Christmas, Classics Christmas Songs (2 Hours of Traditional Christmas Greetings Music), was released in the year 2016. The duration of the song is 2:52. Download English songs online from JioSaavn.