The hills are alive with the sound of music after an Alpine farmer compiled a CD of his farm animals' favourite tunes.
Livestock expert Franz Koeberl, 41, has been serenading the animals on the family farm in Birkfeld, Austria, with his accordion for more than a decade.
Franz and his family, who all play instruments, stage live concerts for the animals to help with milk yield or to keep them calm.
"Whenever they see me coming over the hill with my accordion, they come running and gather around to listen to the tunes. They prefer Strauss - although I and my family would rather hear Mozart," he explained.
"We all play musical instruments and we often play for the animals, and we found that Norma, Norli, Nanni and the rest of the 20 cows have a clear preference for classical music.
"In particular they seem to like the waltz. They are more likely to be sitting down taking the weight off their feet and obviously enjoying the music whenever a waltz is playing - and that also means they are producing more milk," he added.
