Daniel Radcliffe attends the “Horns” premiere at the Landmark Sunshine Theater in New York on Monday. (Evan Agostini/Invision/Associated Press)

Well, here’s something you don’t see every day.

Daniel Radcliffe got to talking about rap with Jimmy Fallon on Tuesday’s “Tonight Show.” The “Harry Potter” star said he was a big fan of the genre — “which,” he noted, “surprises a lot of people about me.”

Also surprising, if not downright astonishing: Radcliffe then attempted to perform a song by the underground rap duo Blackalicious … and he wasn’t terrible!

Quite an accomplishment, given that Blackalicious specializes in high-degree-of-difficulty hip-hop that’s long on tongue-twisting lyrics.

The song Radcliffe performed — “Alphabet Aerobics” — is typical of the duo’s catalogue. Just check out the first few couplets, via Rap Genius:

Artificial amateurs, aren’t at all amazing
Analytically, I assault, animate things
Broken barriers bounded by the bomb beat
Buildings are broken, basically I’m bombarding
Casually create catastrophes, casualties
Canceling cats, got their canopies collapsing

It gets trickier — and faster — from there.

Writing about the 1999 song, AllMusic.com, which calls Blackalicious frontman Gift of Gab “one of the very finest MCs to ever pick up a microphone,” noted: “By the time he hits x, y, and z, he is spitting out lyrics with astonishing verbal virtuosity.”

You can watch the full Radcliffe performance here.

By the by, in a recent Reddit AMA, Radcliffe was asked if he had a favorite musician or song at the moment. This was his rap-free answer:

I’m listening to a lot of Jamie T’s music lately, his new album’s great… what else have I been listening to? First Aid Kits, I”m really into them right now. I’ve also rediscovered somebody around called Sister Rosetta Tharp, and you should all – she is just an amazing singer from the 1940’s and 50’s, way ahead of her time, great voice.