A mini Spice Girls reunion combined with an ITZY collab lead to a showstopping showdown between "Wannabe" and "Say You'll Be There."

The ‘90s rapper and the powerhouse belter join forces with Kep1er for a fierce face-off between "Ice Ice Baby" and "Tell It to My Heart."

K-pop meets J-pop as the 11-member Japanese boy band JO1 hits the stage for Eve's "Let Me Blow Your Mind" versus Kesha's "JOYRIDE."