Hearing Natalie MacMaster and Donnell Leahy speak reverentially about the fiddle, which has propelled their dazzling careers since childhood while cementing their status as Canada's reigning couple of Celtic music, is almost as electrifying as hearing them play it. Indeed, when MacMaster and Leahy married in 2002 - both were already stars in their own right - they could not have predicted their merger would recast what contemporary musical success looks like. They certainly couldn't have imagined capping off what they jokingly refer to as their combined 83 years as performers with milestones including another hotly anticipated Christmas tour, an accompanying TV special, a pending third installment of their Greenbridge Celtic Folk Fest, a recent Road Gold Award from the Canadian Independent Music Association, and last but certainly not least, the arrival of Maria, newest sib to Mary Frances, Michael, Clare, Julia, Alec and Sadie.