The Glee Cast returned to set this week to begin filming the second season of the hit show, amid a flurry of rumors surrounding the guests they’ve got lined up. After star turns by Olivia Newton-John, Kristin Chenoweth and Neil Patrick Harris (pictured). So far all three have signaled that they’d love to return to the show, but it’s the new names that have taken the headlined, with John Stamos, Javier Bardem and, apparently, Paul McCartney all engaged in dialogue with the show’s producers.

What’s more, you can’t get enough of the show’s tunes. Last.fm Trends took a look at how you’ve responded to the soundtrack’s so far…more