The singers settle into sound booths and hear their potential bandmates perform live. Will they make a musical match — or will their personalities clash?

As more singers await their fate, one vocalist makes a career-defining decision. A new band is born, and AJ brings in Nicole Scherzinger as a mentor.

Options dwindle for those who haven't found a band yet. As more musical alliances emerge, two groups take the stage for their formation performance.

A contestant goes home in tears when a new group locks in. Can a boy band find their fourth member? One singer without a band stirs up suspense.

What's in a name? The bands must decide before the showcase. A budding romance puts one group at risk; Kelly Rowland and Liam Payne join as guest judges.

The bands showcase their skills before a live studio audience for the first time. As elimination looms, one vocalist's power moves strike a sour note.

Bigger stage, bigger crowd: As the stakes rise, pressure mounts. The bands lay it all on the line, leaving their future up to the audience to decide.

One contestant faces a singer's worst nightmare: vocal issues. In a bold move, a group changes their song at the last minute. Will it pay off?

Fueled by a surprise boost of support, the three final bands give powerhouse performances. Who will be crowned winner — and who will face the music?