By Jeff Labrecque
Updated July 28, 2011 at 02:34 PM EDT

Stevie Nicks is having a pretty big week.

That episode of South Park that sets its closing montage to Fleetwood Mac’s “Landslide” was on again last night, and she hit the stage with the men of Maroon 5 for a run through of “Leather and Lace” on Monday. Then she made another live appearance on Wednesday, strolling out onto the America’s Got Talent set and plowing through her undisputed classic “Edge of Seventeen.”

Since America’s Got Talent has been doing crazy ratings numbers, you probably went ahead and watched this live. But just in case you didn’t, feast your eyes on Stevie and her witchcraft after the jump:

Nicks starts out pretty strong, and the crowd certainly seems into it (mostly because “Edge of Seventeen” is a fantastically intense song with a killer hook), but there are an awful lot of missed notes in there. Though she looks great and performs with confidence, she’s pretty much blown off the stage by her back-up singers.

While a little bit of rasp is usually good for a song as cutting as “Edge of Seventeen,” Nicks sounds like she’s been smoking two packs of Camels simultaneously through the exhaust pipe of a Lincoln Continental. And let’s face it, that’s too much rasp.

But what do you think? Should we cut Stevie some slack because she’s a bona fide legend, or should she stick to making cameos in videos starring Beyoncé? Let us know your thoughts in the comments.