Mallory Kate Hall and her sister always sing Lady Antebellum's "Compass" to get them through hard times. There have been several of those times lately, as Mallory was in desperate need of a heart transplant.

Channel 2's Tom Regan has followed Mallory's journey. We posted a video of the duo singing "Compass" on our Facebook page July 7 with their wish to meet the band, and Lady Antebellum took notice.

On Saturday, the Forsyth County girls got the chance of a lifetime to perform the song onstage with Lady Antebellum.

Hunter Hayes joined them on the guitar.

The emotional moment overjoyed the band and crowd alike.

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Jo'wan Bellamy taught in the GNETS program for 17 years and recently transferred to Atlanta’s new behavioral program at Crawford Long Middle School. (Arvin Temkar/AJC)

Credit: arvin.temkar@ajc.com