Wow! He is really, really good! We're impressed!
How to Succeed in Business Without Really Trying is in previews right now on Broadway, but someone was sneaky, sneaky enough to record Daniel Radcliffe perform the hit number, I Believe In You, while at the show.
We're so glad they did because it confirmed for us that he's totally right for this part!
Have a listen to DanRad give it all he's got in the video (above)!