This is an old German Tradional, here are the lyrics...
In March the farmer clamps the steeds.
He is repairing his fields and meadows.
He plows the soil, he harrows and sows
and moves his hands early in the morning and late.
The farmers wife, the maidservants, they must not rest,
they have to do in the house and in the garden;
they dig and rake and sing a song
and be happy when everything is beautifully green and blooming.
So spring goes by at work,
then the farmer harvests the fragrant hay;
he mows the grain, then he threshes it out:
in winter there are many happy feasts.