Gorilla Band - S1.E15

Lulu and her brother, Jelani, are going to participate in a village festival. However, they need to practice their drumming skills. When they went off to get a snack, a mountain gorilla came down from a tree and starts beating the drums. Unfortunately, the gorilla gets scared and runs off, after seeing Lulu run towards him. How would Jett and his friends get the gorilla to come back and perform with them?