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Billy Talent drummer Aaron Solowoniuk has revealed has recently underwent open heart surgery.
Solowoniuk, who was diagnosed with multiple sclerosis in 2006, underwent surgery on 2 February.
On Billy Talent's website he said: "The surgery went perfect but healing takes a while. I never thought I would have to write another letter like this. In March of 2006, I wrote a letter telling you all I have MS. Now I am writing you to tell you that I have a problem with my heart that needed to be fixed."
The drummer revealed that the surgery repaired a leaky aortic valve.