By Charlotte Tutton Gogglebox viewers were a little confused on Friday night, after noticing a huge change to the show. The Channel 4 series did something a little different for the latest episode, as the famous opening and closing titles song was slowed down. The usual tune, that has been used since the series began back in 2013, was swapped out for a classical version of the same song. Fans expecting to hear the usual version of Perfect World by Kodaline at the start of the latest episode were surprised when they instead heard piano notes, and a slowed down rendition of the song. Within seco…