I always played classical music on the radio at night for my kids. Since the neighborhood is noisy, I wanted them to be used to sleeping with sound…and exposure to classical music is a good thing.
Mozart, Tchaikovsky, Saint Saens… all good for little ears to listen to.
When my kids got bigger, they could choose. Motown and children’s songs were added to the repertoire. My daughter liked Captain Underpants, so “Super Diaper Baby” played over and over on many nights.
Then there were the bongos. For some reason, my son decided to buy my daughter bongos as a gift. (I often wonder if he was mad at me when he bought them!) My daughter loved to play those bongos along with the radio…especially in the wee hours when she couldn’t sleep… Better than a door alarm for me to know when she was awake at night.