1x4 - My Little Pony: Equestria Girls - Summertime Shorts

Fluttershy joins Pinkie Pie's cheering club at Canterlot High School, and together they cheer on the home team during a soccer game between the Wondercolts and Shadowbolts. Unfortunately, while Pinkie is easily able to get the crowd going, Fluttershy can't get her voice above a whisper. After the game, Pinkie teaches Fluttershy how to cheer properly during the Wondertones' practice, and they later cheer for the school chess club, which actually requires them to be quiet.