The Lunch with the FT recently lunched with Dustin Hoffman at the Beverly Hills Four Seasons over raw plates, where the American actor outed his directorial debut in a film called Quartet:
[...] starring Maggie Smith, Tom Courtenay, Billy Connolly and Pauline Collins as a group of retired opera singers [...]
IMDb breaks it down here:
Cecily, Reggie and Wilfred are in a home for retired opera singers. Every year, on October 10, there is a concert to celebrate Verdi's birthday and they take part. Jean, who used to be married to Reggie, arrives at the home and disrupts their equilibrium. She still acts like a diva, but she refuses to sing. Still, the show must go on... and it does.