I had no idea what on Earth I was watching when I first watched this video, but it’s strangely catchy and addictive. The singing, dancing, age of the people, the clothes and the lyrics seem like they shouldn’t go together, but they do in a hilarious way.
The Wikipedia article on the family is pretty interesting as an example of a family who decided to live an alternative lifestyle. It tells us that the mum and dad in this family moved to Spain from the US in the mid-1960s, and after their kids had grown old enough, 10 years later, they made a family band. They were apparently very successful from the 1970s to the 1990s.