When I'm in the shower, I hum the intro song for Dora the Explorer.
When I wash dishes, I hum various singy parts from Go Diego Go.
When I'm in the car, I'm listening to Polar Bear, Polar Bear, What Do You Hear?.
When I'm trying to fall asleep at night, I go through a multitude of verses from Here Come the ABC's.
I guess this is my new normal.