On the October 28, 2014 episode of “The Tonight Show With Jimmy Fallon,” Harry Potter actor Daniel Radcliffe appeared to promote his latest film, Horns. However, the audience was treated to much more than just a mere interview, as Radcliffe perfectly performed Blackalicious’s “Alphabet Aerobics” — one of the most tongue-twisting rap songs ever. It’s incredible. Watch below.

For sake of comparison, here is the original version: