Muggle Dustin Hoffman to Direct Maggie Smith, Michael Gambon

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Dustin Hoffman is getting ready to pop his director's chair cherry with the veddy British production of "Quartet," a movie all about retired opera singers. Really! Will it be a drama, a comedy, a musical, or some crazy combo of all three?

All we know is that it's jam-packed with British talent of the highest caliber, such as "Harry Potter" favorites Dame Maggie Smith (Professor McGonagall) and Michael Gambon (Dumbledore, duh), as well as Billy Connolly, Tom Courtenay, and Pauline Collins.

And most of them have some pretty good lungs on 'em, too.

Drama is as drama does, so we can only imagine what happens in a retirement home for opera singers. Actually, we don't have to, because Hoffman's movie takes place in one! Naturally, the residents of Beecham House throw a big shindig every year to celebrate the birthday of the famous composer Verdi, but when an old colleague who's seen better days shows up, things get hairy. And will hopefully include someone wearing one of those Viking helmets with horns.

As Empire reports, "Quartet" will portray "a resurfacing of historic grudges, a unsentimental look at aging, and, we'd assume, a fair amount of warbling." Grudges, you say? Like Harry Potter and you-know-who? But with singing?