Daniel Radcliffe showed off his rapping skills on The Tonight Show, impressively performing Blackalicious's "Alphabet Aerobics" – a famously difficult song to get through without a hitch.

Daniel Radcliffe Raps

Radcliffe, 25, was chatting with Jimmy Fallon, when the late night host asked him about his affinity for rap music. The Harry Potter star admitted that he's long been a fan of hip-hop, noting, "I think I was the first kid in my class to learn all the worlds to [Eminem's] 'Real Slim Shady."

Growing up, Radcliffe revealed, he became obsessed with memorizing the words to lyrically challenging rap songs, particularly fast ones. Fallon then challenged him to take on Blackalicious's "Alphabet Aerobics" in front of the live audience. Radcliffe, shrugging off his jacket, accepted the challenge.

Radcliffe's flawless rap performance was backed by The Tonight Show's house band, The Roots.

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On the show to promote his new film Horns, Radcliffe also discussed learning his American accent for the flick. One of the ways Radcliffe picked up the voice was watching the WWF as a kid and recreating wrestling scenes with WWF figurines – The Rock, Triple H, Stone Cold Steve Austin, etc.

Horns hits theaters on Halloween, Friday, Oct. 31.