Pop singer and songwriter Bonnie McKee has opened up about her shock at being told the Jonas Brothers tour, which she was due to join as a support act, had been cancelled just days before it was set to begin.

Speaking to MTV News, the songstress explained that she was dumbfounded by the news that the dates had all been shut down and doesn't understand why they would do that:

"I was completely surprised; it was literally the day before. All of our stuff had been shipped to the East Coast [for the first show in Pennsylvania]; all of our tickets were booked. We had a bus. We had been rehearsing 10 hours a day, every day, for two weeks. It was a huge shock."

"They had been in rehearsals literally days before. Everything was on course and fine, so I don't know. I really don't know what happened."

McKee added that while she doesn't know what happened in the run up to the snap decision to axe the tour, she hopes the stars resolve the issues: "Not all is lost and I hope that the Jonas Brothers work it out. I don't really know exactly what went down, but I know that everyone's kind of at odds. So I hope that they work it out because I think they're very talented."

Following the Jonas Brothers' shock announcement, they deleted their group's Twitter page although they have since returned to the social networking site to tell fans to 'bear with' them.