Glee: The Music, Volume 4 features 18 brand new songs from season two, including songs from special guests Gwyneth Paltrow ("Forget You") and newcomer Darren Criss ("Teenage Dream"). The album includes such memorable Glee performances as "Billionaire", "I Wanna Hold Your Hand" and "Empire State of Mind" as well as 4 songs from the much talked about "Britney/Brittany" episode, which was the most watched episode of FOX s hit TV show to date.