This is my take on what a portion of Rainbow Rocks could've been. It even includes some accusations from Twilight while the gang is being trapped under the stage and there is a detailed friendship lesson in the end.
The Little Pony Legend: Rainbow Rocks - Fimfiction
Rainbow Rocks (partial) Rewrite - Fimfiction
Scootaloo Lost a Leg (and failed to mention it to anybody until
Equestria Daily - MLP Stuff!: 40 of the Best Fanfics to Read for
Rainbow Rocks: Friendship Makes Magic - Fimfiction
Under Their Spell - Fimfiction
Be Careful What You Wish For - One Convention to Remember - Fimfiction
Fanfic concept: an Equestria Girls rewrite - AK Yearling's Writing
The Dazzlings Confrontation Scene rewritten (Rainbow Rocks) - MLP