One of Katy Perry's most successful and inspirational songs has been arranged with optional drumset to rock the house. The modulation to G major makes it very playable, with all sections taking turns at both melody and harmony. First violins have the option to play in third position, while all other sections remain in first position. Students will not only be motivated by the catchy tune and energetic accompaniment, but they will also use staccato, brush stroke, and extensive slurring. This work will add a powerful moment to your next concert.