Foster said his life has changed since being a contestant on the show. “It has just been like rocket fuel to my career to be on American Idol,” he said. “I went from 0 to 50

After, Foster took the stage to perform six songs for a large crowd of eager listeners — many of which he covered on the show. First, he sang "Don’t Rock the Jukebox" by Alan Jackson, followed quickly by Elvis classic “Jailhouse Rock."

Louisiana’s own John Foster is the runner-up of American Idol, Season 23. The three remaining contestants gave their final performances in a star-studded night with music legends and top stars. The finalists opened the show singing together Queen’s classic,