I have found there are certain blues songs that children almost always enjoy. They sing and dance to them. It really help with their musical development. Most of the songs have a strong, definite beat and are simple musically and lyrically. What blues songs do your children or grandchildren like?
Here are some I've found
Pretty much anything by Jimmy Reed (Bright Lights Big City, You got Me Running)
Little Red Rooster
Got My Mojo Workin'