The book also mentions that it can go to the tune of Clementine. I sing "Beasts of England" with my classes every year...we found that Clementine works a little bit better!

Here are the words to the sond Old Major taught -- a song he had remembered from his youth in a dream.  The lyrics are sung to the tune of La Cucaracha:

Beasts of England, beasts of Ireland,
Beasts of every land and clime,
Hearken to my joyful tidings
Of the golden future time.

Soon or late the day is coming,
Tyrant Man shall be o'erthrown,
And the fruitful fields of England
Shall be trod by beasts alone.

Rings shall vanish from our noses,
And the harness from our back,
Bit and spur shall rust forever,
Cruel whips no more shall crack.

Riches more than mind can picture,
Wheat and barley, oats and hay,
Clover, beans, and mangel-wurzels
Shall be ours upon that day.

Bright will shine the fields of England,
Purer shall its waters be,
Sweeter yet shall blow its breezes
On the day that sets us free.

For that day we all must labour,
Though we die before it break;
Cows and horses, geese and turkeys,
All must toil for freedom's sake.

Beasts of England, beasts of Ireland,
Beasts of every land and clime,
Hearken well and spread my tidings
Of the golden future time.