I appreciate the thoroughness of your fact-check on the claim that listening to classical music makes babies smarter. You did a great job citing multiple sources like BabyCenter and Pathways.org, which are reputable and provide a balanced view on the topic.
However, I noticed that you didn’t dive very deeply into the origins of the “Mozart Effect” claim. It might be helpful to explore the initial studies that sparked this belief. For instance, the original study by Rauscher, Shaw, and Ky in 1993 suggested a temporary enhancement in spatial-temporal reasoning in college students after listening to Mozart, but it didn’t specifically address long-term intelligence or its effects on infants.
Overall, your fact-check is solid, but incorporating this additional point could provide a wider view of the topic.