The Willis Clan performs on Wednesday's episode of "America's Got Talent." | NBC photo
Updated: July 23, 2014 10:28PM
The 12 brothers and sisters began by melding their voices, a cappella-style.
Then the Willis Clan launched into a Appalachia-inspired take of the pop song “Fireflies.”
The group impressed some of the judges Wednesday on “America’s Got Talent.”
“With an act like that, you can’t help but smile,” Shock jock Howard Stern said after the Willises performed their rendition of the Owl City song, “They are the cutest damn act ever.”