Who Is John Foster on 'American Idol' Season 23? Meet the Aspiring Country Singer. John Foster has quickly become one of the standout performers on American Idol Season 23, captiv ...

Maggie Dunn and John Foster's bond began in the halls of Brusly High School, where Erin Martin taught and fostered their friendship. Maggie attended John's first gig, a memory that remains etched in ...