I can count on one hand the number of children’s songs I know. There are, of course, the ABC’s song, “Itsy Bitsy Spider,” and … uh… does Guns and Roses’ “Sweet Child of Mine” count? Yes, I know I should learn more, but for the time being, my playtime singalongs and nighttime lullabies to my son tend to lean more toward the top 40 than “Twinkle, Twinkle Little Star” (hey, there’s another one!) A little One Republic here, a little Adele there … what’s the harm, right?