US rockers Yellowcard have been forced to cancel a string of early summer (06) gigs after frontman RYAN KEY was diagnosed with a cyst on his vocal cords. The OCEAN AVENUE hitmaker will shortly undergo surgery, but insists the band will return to their tour in June (06). Key's statement reads, "We're disappointed to be postponing these dates, but it's a relief to know the source of the problems I'd been having with my voice and it's much better to confront it now than later when it could be more serious. "We'll be back on the road in June when we can give it 100 per cent."