Tickets to see Buble were the most traded through Viagogo's websites during 2009 proving that this year has been the Canadian crooner's most successful in Europe. Buble's feat may have been helped by making two appearances on this year's X-Factor including a duet with Stacy Solomon on the final weekend which was seen by more than 17 million people.

Tickets to U2's tour were the second most traded, topping off a bumper year for the band which has seen them ...