Millie Bobby Brown showed off her musical talents on Wednesday’s “Tonight Show”.

Fallon showed the audience an adorable video of Brown, now 15, singing Amy Winehouse’s “Valerie” at age 5.

He then, of course, got the actress to see if she could match that by getting her to belt out another track. She sang an incredible version of Winehouse’s “You Know I’m No Good”.

RELATED: Millie Bobby Brown Says She Was The ‘Queen Of Pranks’ On Set Of ‘Godzilla: King Of The Monsters’

Not ending the musical shenanigans there, Brown and Fallon then took part in a “Beat Battle” skit, which saw them sing an array of songs over random beats.

The tracks included Backstreet Boys’ “I Want It That Way” and Carly Rae Jepsen’s “Call Me Maybe”.

As Brown sat down to chat with the talk-show host she couldn’t resist gushing about her pet tortoises, revealing how their names were inspired by Kit Harington’s “Game of Thrones” character Jon Snow. See more in the clip below.

RELATED: Millie Bobby Brown Wants To ‘Combat’ The ‘Disease’ Of ‘Negativity On Social Media’