You Me At Six frontman Josh Franceschi joined Paramore on stage at London's O2 Arena on Saturday (November 13) to lend his vocal talents to the band's 2007 breakthrough hit, Misery Business."I'm glad everyone at the O2 in London tonight had a good time," he wrote on his Twitter. "I was so, so, so happy to see my friends that smiley and kill it. Plus singing Miz Biz was a privilege and a lot of fun. Thanks guys!"Paramore are set to play a second night at the O2 this evening (Monday, November 15). You Me At Six will kick off their UK tour in December. See www.aloud.com for tickets and a full list of dates.