I’ve heard that baby’s will often sing in a certain interval ( I forget which one ) but it’s in the Nah Nah Nah Nah Nah Nah chant, and the song "Blue Bird." K sings when Da Da gets home in 5ths. When she is happy, she’ll sing/chant "love, love," : "Ba by," and sometimes "Kit ty."
When i sing her song to her, she grins at me like I’ve caught on to the secret of her world.
Last week she snuck off with my recorder as I was practicing for the co-op class. I caught her when she put it to her mouth, and hummed.
I love having a house full of music! Blessings!