AMERICAN IDOL "618 (Season Finale)" The live coast-to-coast, three-hour season finale features special performances from music legends and today's top artists, with the Top 3 contestants taking the stage for the final time as America decides who will become the next American Idol. SUNDAY, MAY 21 (8:00-11:00 p.m. EDT/5:00-8:00 p.m. PDT), on ABC. (Eric McCandless/ABC via Getty Images) WARREN PEAY, ZACHARIAH SMITH, RYAN SEACREST, OLIVER STEELE, KATY PERRY, IAM TONGI, COLIN STOUGH, MEGAN DANIELLE, LUKE BRYAN, TYSON VENEGAS, NUTSA, LIONEL RICHIE, WÉ ANI, MARYBETH BYRD, HAVEN MADISON, LUCY LOVE