WOW! This is HUGE!
According to the Billboard Charts, Darren Criss' AMAZING cover of Katy Perry's Teenage Dream on Glee this week is expected to sell from 150,000 to 175,000 downloads on iTunes, which would make it the single-best sales week for a single from the series - even better than the current number one - Don't Stop Believin' by Journey!
If Criss weren't secured a regular spot already, he'll DEFINITELY be getting one now!
And if you haven't already watched it a hundred times already - like us - then check out the performance (above)!