Farmers and ranchers all have a certain way to call their cattle. This musical farmer calls his cows home and gets in some practice with his trombone all a the same time.

This farmer has figured out the sound of the trombone carries a long distance. So, rather than waste his voice yelling or go out looking, all he needs to do is keep playing his serenade until the cows come home.

Once they get close, the cows actually stop, listen and genuinely seem to enjoy the musical performance of the song 'Royals' - the popular tune sung by Lorde.

Correct me if I'm wrong, but it sounded like the cows were mooing for an encore. Something like 'Grazing in the Grass' would seem appropriate.