I asked my married children to share ideas of how they use music in their homes. Holly, a daughter-in law, said that usually her kids tell her to STOP singing--she says she's a "tone deaf non singer". But her 3 year old, Maya, really likes her to sing songs like "5 little monkeys jumping on the bed, 5 little ducks, and how much is that doggie in the window" (www.dltk-teach.com/rhymes/monkeys/words.htm, www.youtube.com/watch?v=2AkLE4X-bbU , www.britishcouncil.org/kids-songs-pets.htm ). Holly will sometimes change the words of the song to see if Maya will catch her, which she always does and then corrects her. Maya thinks it's funny to have her mom sing "5 little alligators jumping on the bed" or 5 little monkeys jumping on the couch". Maya also likes to have cats with purple tails sold "in the window".
Holly mentions that lots of children's songs are good for math, pattern recognition, rhyming, story telling, motor skills, etc. Thank goodness Holly hasn't stopped singing. Being a "non-singer" or not, children love to hear their parents sing and interact with them on a fun one on one basis. It sounds like love to them!