From NetFlix:

A riveting profile of Australian keyboard virtuoso David
Helfgott (Geoffrey Rush) and his ultimate triumph over a
domineering, abusive father (Armin Mueller-Stahl);
schizophrenia; and an obsession with the all but unplayable
Rachmaninoff Piano Concerto No. 3. Sir John Gielgud,
superb as ever, plays Helfgott’s tutor. Richly deserved
Oscars went to Rush (Best Actor) and to Mueller-Stahl for
his supporting turn.

You should read about David Helfgott in Wikipedia. The movie is not exactly true,
but close enough. In the film Helfgott’s father is more of a monster than perhaps
he deserves to be. I was disappointed to learn that Helfgott’s performance of the
Rachmaninoff Third Piano Concerto was criticized quite negatively. Never mind,
just enjoy the film.

As with most “feel good” movies, you first have to “feel bad”.
When Lynn Redgrave enters the film, you just know the movie will get happier.

In several scenes Helfgott forgets to wear clothing. He gropes a woman several
times. Hence, perhaps not for children.

HIGHLY RECOMMENDED, especially for classical music fans,