Singer-songwriter Adele is staring at cancellation of her European comeback tour as she has failed to sell out the tour. Fans fear she may pull out of gigs at the last minute. Tickets for her 10-date Adele In Munich gigs went on sale two weeks ago and apparently extra dates were added “due to unprecedented demand”, reports Mirror.co.uk. Yet thousands of tickets remain available for the dates listed on Ticketmaster from August 2 to 31. This seems to be the potential second instance of tour cancellation after Adele was forced to pull out of some of her Las Vegas residency gigs, which were due to take place this month. Apologising for the ‘inconvenience’ in a statement on Instagram, the 35-year-old wrote: “Sadly I have to take a beat and pause my Vegas residency. I was sick at the end of last leg and all through the break.” (IANS)