A popular children's song, by an unknown author (as far as I can find). The Mighty Blue Kings do I great rendition of this on the album Live From Chicago. The plain text is the lead part, italics are echoed by the group.
Green Grass Grows All Around
written by: unknown
There was a tree
there was a tree
All in the wood
all in the wood
The prettiest tree
the prettiest tree
That you ever did see
that you ever did see
The tree in a hole
and the hole in the ground
and the green grass grows all around, all around
The green grass grows all around

And on that tree
and on that tree
There was a limb
there was a limb
The prettiest limb
the prettiest limb
That you ever did see
that you ever did see
The limb on the tree,
and the tree in a hole,
and the green grass grows all around, all around
The green grass grows all around.

And on that limb
and on that limb
There was a branch
there was a branch
The prettiest branch
the prettiest branch
That you ever did see
that you ever did see
The branch on the limb,
and the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

And on that branch
and on that branch
There was a nest
there was a nest
The prettiest nest
the prettiest nest
That you ever did see
that you ever did see
The nest on the branch,
and the branch on the limb,
And the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

And in that nest
and in that nest
There was an egg
there was an egg
The prettiest egg
the prettiest egg
That you ever did see
that you ever did see
The egg in the nest,
and the nest on the branch,
and the branch on the limb,
and the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

And in that egg
and in that egg
There was a bird
there was a bird
The prettiest bird
the prettiest bird
That you ever did see
that you ever did see
The bird in the egg,
and the egg in the nest,
And the nest on the branch,
and the branch on the limb,
And the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

And on that bird
and on that bird
There was a wing
there was a wing
The prettiest wing
the prettiest wing
That you ever did see
that you ever did see
The wing on the bird,
and the bird in the egg,
and the egg in the nest,
and the nest on the branch,
and the branch on the limb,
and the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

And on that wing
and on that wing
There was a feather
there was a feather
The prettiest feather
the prettiest feather
That you ever did see
that you ever did see
The feather on the wing,
and the wing on the bird,
and the bird in the egg,
and the egg in the nest,
and the nest on the branch,
and the branch on the limb,
and the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

And on that feather
and on that feather
There was a bug
there was a bug
The prettiest bug
the prettiest bug
That you ever did see
that you ever did see
The bug on the feather,
and the feather on the wing,
and the wing on the bird,
and the bird in the egg,
and the egg in the nest,
and the nest on the branch,
and the branch on the limb,
and the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

And on that bug
and on that bug
There was a germ
there was a germ
The prettiest germ
the prettiest germ
That you ever did see
that you ever did see
The germ on the bug,
and the bug on the feather,
and the feather on the wing,
and the wing on the bird,
and the bird in the egg,
and the egg in the nest,
and the nest on the branch,
and the branch on the limb,
and the limb on the tree,
and the tree in a hole,
And the green grass grows all around, all around
The green grass grows all around.

Yes, the green grass grows all around, all around
The green grass grows all around!

[whee...]