Whiplash (2014)

Excellent drama about a boy (Miles Teller) at a New York musical school wanting to become an all-time great drummer. His tutor, Terence Fletcher (J. K. Simmons), is pushy and sadistic in his methods, pushing Andrew to ever more painful extremes. 

It’s fascinating and often uncomfortable viewing. The music is tremendous, and the drumming sequences are almost unbearably intense. 

Director Damien Chazelle also directed La La Land and there are some similar motifs.