Oh, these white-skinned girls, they do not need anything but to take a big phallus of a Negro in themselves and, if possible, to swallow even more, to make them shiver and want to vomit. The brunette was extremely satisfied, as can be seen in the scenes that were filmed after everything that happened.
The student clearly has problems with music, it is unclear how she learns here. Although... if we judge by the way she passes this test with the teacher, it all makes sense.