Before the final votes were tallied, American Idol runner-up John Foster used his voice to honor friends he lost. The 18-year-old country singer first performed his original tune "Tell That Angel I Love Her" during the Easter Sunday special in April.

Since his audition, Foster has climbed his way to the top five in the show, performing songs like "Callin' Baton Rouge," "Jailhouse Rock" and Disney's "Almost There." On Monday night, he'll perform at 7 p.m. on ABC for a chance in the show's top 3. Those in the top 3 will head into the Sunday finale.