SEASON FINALE: Last night, in the first part of this first ABC Idol competition finale, the three remaining contestants sang three songs apiece – including, to end their respective sets, Caleb Lee Hutchinson singing Johnny Cash’s “Folsom Prison Blues,” Gabby Barrett singing Journey’s “Don’t Stop Believin’,” and Maddie Poppe (pictured) singing Fleetwood Mac’s “Landslide.” After Poppe closed the show with that number, judge Katy Perry pulled out her smartphone and announced, “I’m voting for you!” If America follows suit, tonight will see Poppe crowned as the first American Idol of the new ABC era. But Idol has fallen for deep-voiced country singers before, so don’t count out Hutchinson quite yet…