Darren Criss' arrival on GLEE has been a total dream.

I much preferred Katy Perry's "Teenage Dream" to her initial single "California Gurls" and, as everyone already knows, the show's take on the track was one of its best moments, a song transformed for the better in a new context.

Criss performed for The Trevor Project benefit in LA, a great organization that provides phone support to gay and lesbian youth who are generally struggling or even considering suicide.

Footage popped up on the web a couple days ago but this is far superior....the notes, especially when the "surprise guest" appears, are iffy. But everyone's heart is in the right place. [I love the backup 'singers' behind him who are so obviously lip-syncing]

It starts with "Not Alone" and kicks into "Teenage Dream" around the halfway mark.