This song is a very well known Spanish carol arranged by Linda Spevacek.
The Spanish text is as follows:
Riu, Riu, Chiu la guarda ribera
Dios guardo el lobo de nuestra cordera
In English this can be translated to:
Riu, Riu, Chiu hear the joyful singing
Message of the ligh the nightingale is bringing.
The song is in strophic which means the chorus is repeated after each verse. There are four verses total. These verses can be sung in English or Spanish. Many directors choose for the singers to perform the verses in English because the text is very powerful.
Hear the song of peace he brings to every nation,
calling all to join, join their hearts in jubilation
No more needless warm, no more hunger for the poor,
let the world unite, helping on another more.
Hear the song of hope come out in lyric form,
like a whippoorwill who did weather through the storm
Always look beyond, good is waiting in the wing.
When you find it, come, come and join him now and sing.
Hear the song of love he sings to all creation,
bringing joy to all at this time of celebration
For the season now stands for love and hope and peace,
carry it beyond, never let the singing cease.