In English the lyrics of the madrigal means something like:

"At the sweet dawn Filisto, sitting on his hide, together with Agrio, Mopso and the great shepherd Negrino began to strike up these words: while the sun appears from east let us sing in sweet style and greet the new and green April. Then they all let the air resound with beautiful harmonies. Now that the winds have been banished together with the white snow and the rime which used to threaten with so much misery and now that the elements stay quiet let us sing together and greet the month that renews the land with flowers."