Guitar Hero World Tour - Hot for Teacher (Expert Vocals FC)

I thought I'd have some fun with today's uploads and do comparisons of vox chartings for the same song in 2 separate games. Case in question - Van Halen's "Hot for Teacher", which appeared in both main setlists for GH World Tour and (obviously) GH Van Halen. There are some subtle differences, feel free to spot them all.
Thanks :P