When doing a seventies episode, you cant leave out the iconic band the Bee Gees! Yet, this classic song was still a dangerous choice for Glee its very high pitched! It seems like a suitable song for Kurt, as hes the guy with the highest voice, so we all got a shock when it was Finn who burst into song. When only listening to the original, its hard to imagine Cory singing it it just doesnt seem like it would suit his voice, but here, he proved just how versatile a singer he really was and for this reason alone it makes the list.