While shopping for a new guitar, Rainbow Dash and Trixie have a shred-off in this short from My Little Pony: Equestria Girls - Rainbow Rocks. Subscribe to .\rbr\rbrHere you can buy the Tickets!: ▻For more videos: .\rbr\rbrEquestria Girls - Trailer: Rainbow Rocks Equestria Girls - Rainbow Rocks Short: Music to My .