Overview

• The six-week randomized trial involved 110 caregiver–infant pairs and a four-week smartphone-based music enrichment program designed to increase singing frequency.
• Intervention participants significantly raised the use of singing in soothing routines and saw measurable gains in infants’ general mood via real-time surveys.
• Caregivers completed over 70% of the daily surveys and 90.3% said they would continue singing to their infants after the study ended.
• Researchers noted that the predominantly white, highly educated and socioeconomically advantaged sample limits the broader applicability of the findings.
• Two follow-up studies are under way: a direct replication with professionally developed materials and an eight-month longitudinal trial comparing singing, music listening and reading interventions.