9.)B.O.B.- "Both Of Us" 8.)Pitbull- "Back In Time" 7.)One Direction- "One Thing" 6.)Rita Ora- "How We Do" 5.)Justin Bieber- "Boyfriend" 4.)Carly Rae Jepsen- "Call Me Maybe" 3.)One Direction- "What Makes You Beautiful" 2.)Gotye- "Some… more »