America's Got Talent season 4

Prior to auditions taking place, Jerry Springer announced he was unable to continue hosting AGT due to his talk show schedule, in addition to summer theater commitments he had.

[3] The format for the second stage of auditions changed by removing the "boot camp" portion that had been used in the previous two seasons, in favor of using the selection process from Britain's Got Talent, under the title of "Vegas Verdicts".

Forty-eight of the participants who auditioned for the season secured a place in the live quarter-finals (including those originally eliminated in the Vegas Verdicts stage before Cowell's intervention), with twelve quarter-finalists performing in each show.

About twenty of these advanced and were split between the two semi-finals, with ten semi-finalists securing a place in the live final, which was a single stage rather than multiple rounds in previous seasons.

Guest Performers, Results Show: Thelma Houston, Shakira, Rascal Flatts, cast members of Cirque Du Soleil, Leona Lewis, and Susan Boyle.