The Ents' Marching Song

The Ents' Marching Song is what the Ents sing as they head off to Isengard. They keep time with their hands and march to the beat as they go to attack Saruman and his minions. A few of the words appear to be in the Entish language.
 * We come, we come with roll of drum: ta-runda runda
 * runda rom!
 * We come, we come with horn and drum: ta-runa runa
 * runa rom!
 * To Isengard! Though Isengard be ringed and barred with doors
 * of stone;
 * Though Isengard be stong and hard, as cold as stone and bare
 * as bone,
 * We go, we go, we go to war, to hew the stone and break the door;
 * For bole and bough are burning now, the furnace roars - we go
 * to war!
 * To land of gloom with tramp of doom, with roll of drum, we come, we
 * come;
 * To Isengard with doom we come!
 * With doom we come, with doom we come!