The Hobbit, “The Last Stage”. On the way home to Bag End from Erebor, Bilbo and Gandalf stopped by Rivendell, and the elves burst into song upon seeing them.

The dragon is withered,
His bones are now crumbled;
His armour is shivered,
His splendour is humbled!
Though sword shall be rusted,
And throne and crown perish
With strength that men trusted
And wealth that they cherish,

Here grass is still growing,
And leaves are yet swinging,
The white water flowing,
And elves are yet singing
Come! Tra-la-la-lally!
Come back to the valley!

The stars are far brighter
Than gems without measure,
The moon is far whiter
Than silver in treasure:
The fire is more shining
On hearth in the gloaming
Than Bold won by mining,
So why go a-roaming?
O! Tra-la-la-lally
Come back to the Valley.

O! Where are you going,
So late in returning?
The river is flowing,
The stars are all burning!
O! Whither so laden,
So sad and so dreary?
Here elf and elf-maiden
Now welcome the weary
With Tra-la-la-lally
Come back to the Valley,
Tra-la-la-lally
Fa-la-la-lally
Fa-la!

Provided by: Ainulindale