Gustav cries after watching his father have noisy sex with the maid, no nudity.

Mahler visits a friend in a mental hospital who has stripped entirely naked (the filmmakers are careful not to show his genitalia).

Female full frontal nudity with pubic hair are seen through a sheer outfit in the opening chrysalis scene.

Alma dances on Gustav's coffin wearing sexy lingerie, shoving her crotch at him, no nudity. She then seduces the guards with a crude seductive dance, showing her breasts.

A few scenes show drinking; in one scene Mahler smokes a cigar.

Characters smoke cigarettes, including Max.

A long, painful, self-indulgent sequence allegorizing Mahler's conversion from Judaism to Catholicism to please Cosima Wagner may be offensive. This includes crude Nazi symbolism.

Mahler's composing hut explodes into flames.