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Adele 's saying "Hello" to the acting industry ... nailing down her first role on the silver screen in Tom Ford 's upcoming period piece.

The singer-songwriter will flex her acting chops in "Cry to Heaven" ... a new movie based on the 1982 Anne Rice novel of the same name. Gallery Launch Gallery Getty

"Cry to Heaven" takes place in 18th century Italy and follows the dynamic between two men ... one a Venetian noble -- the other a castrated opera singer.

Unclear who Adele will play at this time ... though with opera taking on a key element in the film, we'd guess she's going to flex her dynamic pipes in the flick. Getty

Adele's certainly being thrown into the deep end with this one, BTW ... 'cause Hollywood heavyweights Nicholas Hoult , Aaron Taylor-Johnson ,

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