Gymboree Play & Music Class Descriptions Gymboree Play and Music classes are uniquely and intentionally designed for early childhood development. Through play, your child is challenged physically, socially and cognitively, building crucial skills to support a lifetime of learning. Our expert play leaders support you through 45 minutes of uninterrupted time to play, explore, and learn. Our custom designed curriculum challenges your child as they grow, with changing playscapes and themes every three weeks.