Mermaids, don't sing. They don't pine to be human or have cute little fish sidekicks. They are creepy and all they want to do is drag you down to the watery depths to do whatever they do with drowned, waterlogged bodies. Perhaps wait for them to get all squishy and easy to eat like alligators do to their prey. Certainly not to sing to them. So avoid them, they don't like you!