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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.

Louisiana's John Foster is headed into Sunday night's "American Idol" grand finale after another magical "Disney Night" on Monday's "Idol" episode.

It’s been a thrilling journey for Louisiana fans of American Idol, and now, they have even more reason to cheer. LSU biology student John Foster, just 18

Top 5, baby! He impressed the judges with a song from "Princess and the Frog," and with a country classic by Brooks and Dunn.

Fan-fave singers John Foster and Jamal Roberts have both advanced to the Top 7 of American Idol, joining Slater Nalley, Thunderstorm Artis, Gabby Samone, Breanna Nix, and Mattie Pruitt. This is undoubtedly one of the strongest lineups in the show's 23-season history.

John Foster is rarely seen without his signature cowboy hat, but his girlfriend shared a rare photo that showed what he looks like underneath his favorite accessory. The aspiring country singer made the Top 8 on the Sunday’s (May 4) episode of American Idol, and Brooklyn Bourque celebrated by posting photos with him on Instagram afterward.

The Welcome Home celebration begins at 5 p.m. on First Street in Addis by the RaceTrac near LA-1, where John Foster will parade down, right in front of many homes along the street. After the parade, John Foster will ride a boat down Bayou Plaquemine around 7 p.m. Boats are welcome to join from the riverfront.