Let's Rock! Choral Book. From Little Big Stuff Music, creators of the best-selling Life School Musical, Let’s Rock! is a non-seasonal musical for kids that is bursting with the coolest music out there, wrapped in a fun and meaningful story just right for today’s kids. While our culture keeps telling kids “you can be a star . . . just grab for the spotlight,” Jesus taught that to be great in God’s kingdom, learn to serve others and point them to Jesus. Whether on stage, or working behind the scenes, God has given us all gifts and talents to be used to bless others, and to glorify God.