An Israeli dairy farmer is crediting classical music with increasing the milk production of his cows.

Avraham Sindlis of Givat Haim Ihud in the past two years has seen his kibbutz’s cowshed move up to 11th place in Israeli milk production from 102nd.

His secret? Playing the works of Mozart, Beethoven and Strauss to the cows.

“It’s pleasant for them, and for me, too, and it passes the day,” Sindlis told Yediot Achronot on Thursday. “It may be hard to prove scientifically, but the quantities of milk speak for themselves.”