Joh Yowza was a male Yuzzum performer for the Max Rebo Band. He often performed duets with Sy Snootles. Shortly before the Battle of Endor, Yowza and the rest of the band performed at Jabba the Hutt's palace on the planet Tatooine. Among Jabba's courtiers, there were many people who disliked Yowza's voice and dreamed of silencing him brutally. The Hutt, however, appeared to like the Yuzzum singer, and Jabba's opinion was the only one that mattered in his palace.