Siblings with Big Island ties compete on ‘American Idol’

Liahona and Ammon Olayan smile during their audition for "American Idol." (ABC/John Fleenor)

Liahona and Ammon Olayan perform the original song, "Boom," during their audition for "American Idol," which aired Sunday, Feb. 21. (ABC/John Fleenor)

After discovering their love of music while living off the land on the Big Island, two siblings are showcasing their talent on “American Idol” this season.