Sows in heat due to Dutch singer

Pigs like music – that’s a well-known fact. It’s lesser known, however, that certain singers may have an exceptional influence on sows getting in heat. A Dutch pig producer recently found out that music by the national singer Jan Smit particularly turns on his sow herd as he noted the sows sounding differently, sows were more ready for insemination, semen uptake went quicker and fewer sows returned to oestrus. He even expects more piglets to be born per sow. I don’t know