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(Yahoo!) - Rascal Flatts is well-known and loved for its sweet melodies and harmonies, usually delivered pitch-perfect to their crowds of adoring fans. However, when the trio performed its new single, "Rewind," at Sunday night's Academy of Country Music Awards, things seemed a little too flawless.

Critics were quick to pick up — and comment —on the fact that the band probably was lip-synching their way through the high-profile appearance. (Yahoo Music's own Chris Willman noted, "There was no doubt in anyone's mind that what we were hearing was straight out of the studio.")

Wisely, the Flatts didn't even try to skirt — or, worse, blow off — what was obvious. On Monday night, the band posted an apology on their social media, admitting to lip-synching due to lead singer Gary LeVox losing his voice shortly before the telecast. "We've never done it before, and we obviously aren't very good at it," they observed.


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