Fisher-Price Laugh & Learn Smart Stages Sis 50+ sing-along songs, tunes & phrases Paws, tummy, ears and light-up heart respond to baby's touch (7 activations in all!) Includes Smart Stages technology-learning changes as baby grows Introduces body parts, colors, letters, counting and more! Helps develop sensory and fine motor skills 50+ sing-along songs, tunes & phrases. Includes smart stages technology-learning changes as baby grows. Introduces body parts, colors, letters, counting and more! Helps develop sensory and fine motor skills.