If Alejandro will be entering top the American Idol top 10 … On Monday (April 15), after the votes are closed, the Top 10 will be revealed in the season’s first LIVE show. Tonight is the season 18 finale of ABC's American Idol, and stars from past seasons of the show will perform during the episode. One of those guests is Alejandro Aranda … Tonight is the season 18 finale of ABC’s American Idol, and stars from past seasons of the show will perform during the episode. American Idol 2019 Top 14 airs on Sunday April 14 at 8 pm on ABC when all American Idol fans will vote Alejandor for the first time. One of those guests is Alejandro Aranda. Then along came Alejandro Aranda. Full disclosure: I checked out of "American Idol" a long time ago and had zero interest when ABC rebooted the show last season.