For quite some time, both the farmers as well as the scientists knew that cows tend to produce more milk when they listen to music. However, no logic was found between the two. The connection between the cows and increased productivity of milk had no scientific explanation.
According to Modern Farmer magazine, the cows find it easy to get rid of their stress when they listen to music. However, they don't show the same result for all types of music.
According to the study conducted in 2001, cows did not show improvement in milk production while listening to rap or techno songs; however, when they listened to soothing songs like Bridge Over Troubled Water and Everybody Hurts, they showed an increase of three percent in their milk production.
Whether you know it or not, even animals are stressed. According to the study, cows find it easy to release oxytocin, which is a hormone that is related to the milking process, when they listen to music. This is because they feel their stress-reducing second by second when they have music in their ears. It distracts them and allows them to stay calm when the milking process is on.