Rainbow Dash had formed the group the Rainbooms with thier friends, just in time to partake in the Musical showcase, but ended up playing in the battle of the bands.

In the end, Twilight Sparkle, Sunset Shimmer and Vinyl Scratch had joined the band, before the event was over. The event had been epic and ended with a blast.

Once the group played the last song on their repertoire; the Dazzlings were defeated, and their gems cracked open and consequently died. In shame, the defeated Dazzlings fled the stage and ran off.

This could have been the end of things, but the group and band stuck together, even after the event was over. As the friends they had been before, they are bound to stay together; enjoying the music, they keep the band going.

Then Twilight Sparkle had to leave the scene; while Sunset Shimmer, and Vinyl Scratch stay with the group. Then two more players were added to the group, which is where the adventure begun.