Garth Brooks says he may be forced to lip sync his way through his performance at the 2015 ACM Awards on Sunday night. The singer is worried that five nights in Portland (wrapping Thursday night) may steal his voice, so he has a backup plan.

"Just in case we have to lip sync, we taped a performance that was solely for the awards show,” Brooks revealed during a SiriusXM Town Hall broadcast.

It's a once in a lifetime performance, he says, adding that returning to the ACM stage will be very emotional for him. In addition to performing, Brooks is nominated in the Entertainer of the Year category. Fans can vote for the winner now at VoteACM.com.

Lip syncing is becoming less and less of a taboo issue, but Brooks is among the few to admit to considering it prior to a television broadcast. Last year Rascal Flatts were criticized when they admitted to lip syncing after the show wrapped. Singer Gary LeVox says he would not have been able to take the stage otherwise.

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"We've never done it before, and were obviously not very good at it," the group said last April.

After every televised awards show someone is accused of lip syncing, but fans are becoming more understanding of the technical issues that surround a broadcast performance. There’s no time to sound check or work out issues if something goes wrong. A singer can be left looking foolish if he or she is having troubles that viewers at home aren’t aware of.

Perhaps the most famous lip syncing moment came from the 1994 ACM Awards, when Alan Jackson protested being told to lip sync by telling his drummer to play without sticks. Learn more about that incident in the video below.

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