Your puppy"s nervous system is fragile; their sensory environment can positively or negatively impact personality, perception, and tolerances for years to come. From 6-weeks to 18-months, all pups are sensitive and highly receptive. An early peaceful sound environment helps mold a calm canine. Music to Calm Your Puppy contributes to a soothing sonic environment and helps mask unwelcome noises. With puppy-specific frequency modulation, CYP also becomes an auditory trigger to help transitions from playtime to training or sleep.