SPOILER ALERT: The story includes details about the Season 24 finale of ABC ‘s American Idol . Hannah Harper has been crowned the winner of American Idol Season 24. Tonight’s live three-hour season finale delivered an unforgettable night of music as audiences voted in favor of Harper. Meanwhile, competitors Jordan McCullough and Keyla Richardson finished runner-up and in third place, respectively. The star-studded evening featured Alicia Keys as guest mentor , as well as special performer. Her addition was announced back in late April, as the 17-time Grammy-winning artist coached the Top 3 finalists for the stage and a final chance to earn America’s vote. Judges Luke Bryan, Lionel Richie and Carrie Underwood also took the stage tonight in a special group performance. The lattermost country singer also performed alongside Mötley Crüe.…