MusicMusic TherapyPitch PerceptionPitch DiscriminationMotor SkillsAuditory PerceptionFingersAcoustic StimulationPsychomotor PerformanceGerminal CenterChild Day Care CentersCommunity Health CentersTrauma CentersTertiary Care CentersPlay and PlaythingsCenters for Disease Control and Prevention (U.S.)Poison Control CentersPhotosynthetic Reaction Center Complex ProteinsMolecular Sequence DataInformation CentersRetrospective StudiesTime FactorsAmino Acid SequenceMicrotubule-Organizing CenterTreatment OutcomeUnited StatesBirthing CentersBase SequenceMutationRisk FactorsProspective Studies