Season 21 lives up to its lucky number with more Golden Buzzers in one night than ever before; it's an evening full of surprises, with a lineup ranging from not one but two dance crews that are not human, to a crossbow stunt duo taking the stage.

It's a magical night as auditions continue with a magician who returns for redemption in hopes of winning over the judges, social media stars bring their talents to the big stage and an opera singer duets with her dog.

Auditions heat up with a fire-shooting all-female quartet and a pair of comedic illusionists.

Auditions ramp up as a married mentalist duo captivates the crowd, returning contestants chase redemption and a world record and a parkour prodigy pushes boundaries like never before.

It's a quarter-millennium celebration as the judges and Terry look back at their favorite acts from America's biggest talent show, complete with a festive Fourth of July theme fit for the USA's 250th anniversary.

The judges are tougher than ever as auditions continue; dueling magicians go head-to-head, a multigenerational tumbling team flips into the spotlight and a laser-fueled dance trio ignites the stage.

Auditions resume as more unforgettable oddballs and heartfelt hopefuls take the stage, from dancing dads and a death-defying aerialist to a series of original songs that divide the judges like never before.

It's the final night of auditions, and the judges must determine who will be moving on; a Howie lookalike takes the stage and a fluorescent singing act wows the judges with his original song.

The acts that are moving on to the live shows, along with those that were selected to appear in the brand-new Judges' Callback rounds, are revealed.

Simon Cowell and Mel B bring back their chosen acts to perform one final time as the first ever Judges' Callbacks decide who advances to the Live Shows; Simon welcomes Normani and Poo Bear, while Mel reunites with bandmate Emma Bunton.