Switch videos are animations or slideshows set to music, which can be controlled by a range of common assistive access devices.
They are designed to help children understand and generalise cause and effect (the action / reaction bond), one of the foundation stones for early learning.
This site has been leading the way in fun entertaining songs/ activities for years. There are some very funny clips found here and many linked to children's TV favourites.
The Lion Sleeps tonight is a favourite when I am training and that is just the teachers !