In Modern Russian, помимо is rarely used to mean “except for.” It is primarily used in the meaning of “apart from” or “besides.”
Помимо музыки, Маша также увлекалась рисованием и танцами.
paMEEma MOOzyki MAsha TAKzhe oovliKAlas risaVAniyem i TANtsami
Apart from music, Masha was also interested in art and dancing.

