Riz Ortolani
Let's not forget the amazing score by old Riz Ortolani (R.I.P)
https://m.youtube.com/watch?v=Sc__w6_8KF8
The upbeat/dreamy tune also crops up during the bathing scene, where the viewer's nerves are spared for a few minutes as the professor enjoys a carefree frolic in the river with some friendly jungle girls.