cali's books spanish nursery rhymes sound books for babies and toddlers 1-3 and 2-4. bilingual spanish english musical book. best educational spanish musical toy with favorite spanish songs cali's books singing in several languages is enriching for children and adults alike; singing nursery rhymes encourages learning new vocabulary and improves memorization and social skills in babies and toddlers. sound books for toddlers are great to promote calm, develop language, and keep your baby busy for hours. whether learning a new language or exposing a child to a different culture, this bilingual spanish-english musical rhymes book for babies and toddlers makes the perfect gift for any occasion. cali's books spanish nursery rhymes (pin pon) includes six favorite spanish infant songs: pin pon, a mi burro, tengo una vaca lechera, que llueva, que llueva, un elefante se balanceaba, duérmete niño.