Whats that song called, its very famous, its in a lot of war scenes,when 2 armies are fighting each other?

Question

It was in the Lord of The Rings, its like a chorus of people singing, its in many battle scenes in movies.

Answer 1

Dancin' Queen, by Abba

Answer 2

Which of the Three films ? Here is a list of the soundtracks.

The Fellowship of the Ring

"The Prophecy" – 3:54
"Concerning Hobbits" – 2:55
"The Shadow of the Past" – 3:33
"The Treason of Isengard" – 4:01
"The Black Rider" – 2:48
"At the Sign of the Prancing Pony" – 3:14
"A Knife in the Dark" – 3:34
"Flight to the Ford" – 4:15
"Many Meetings" – 3:05
"The Council of Elrond" featuring "Aníron (Theme for Aragorn and Arwen)" composed and performed by Enya – 3:49
"The Ring Goes South" – 2:03
"A Journey in the Dark" – 4:20
"The Bridge of Khazad Dûm" – 5:57
"Lothlórien" – 4:34
"The Great River" – 2:43
"Amon Hen" – 5:02
"The Breaking of the Fellowship" – 7:21
"May It Be" composed and performed by Enya – 4:16

The Two Towers

"Foundations of Stone" – 3:51
"The Taming of Sm̩agol" Р2:48
"The Riders of Rohan" – 4:05
"The Passage of the Marshes" – 2:46
"The Uruk-hai" – 2:58
"The King of the Golden Hall" – 3:49
"The Black Gate Is Closed" – 3:17
"Evenstar" (featuring Isabel Bayrakdarian) – 3:15
"The White Rider" – 2:28
"Treebeard" – 2:43
"The Leave Taking" – 3:41
"Helm's Deep" – 3:53
"The Forbidden Pool" – 5:27
"Breath of Life" (featuring Sheila Chandra) – 5:07
"The Hornburg" – 4:36
"Forth Eorlingas" (featuring Ben Del Maestro) – 3:15
"Isengard Unleashed" (featuring Elizabeth Fraser & Ben Del Maestro) – 5:01
"Samwise the Brave" – 3:46
"Gollum's Song" (performed by Emiliana Torrini) – 5:51
"Farewell to Lórien" (featuring Hilary Summers) – 4:371
1 Only included on the Limited Edition release of the album.

The Return of the King

"A Storm Is Coming" – 2:52
"Hope and Memory" – 1:45
"Minas Tirith" – 3:37
"The White Tree" – 3:25
"The Steward of Gondor" – 3:53
"Minas Morgul" – 1:58
"The Ride of the Rohirrim" – 2:08
"Twilight and Shadow" – 3:30
"Cirith Ungol" – 1:44
"And̼ril" Р2:35
"Shelob's Lair" – 4:07
"Ash and Smoke" – 3:25
"The Fields of the Pelennor" – 3:26
"Hope Fails" – 2:20
"The Black Gate Opens" – 4:01
"The End of All Things" – 5:12
"The Return of the King" – 10:14
"The Grey Havens" – 5:59
"Into the West" (performed by Annie Lennox) – 5:49

Answer 3

"O' Fortuna"

Carl Orff - O Fortuna Song Lyrics
O Fortuna
velut luna
statu variabilis,
semper crescis
aut decrescis;
vita detestabilis
nunc obdurat
et tunc curat
ludo mentis aciem,
egestatem,
potestatem
dissolvit ut glaciem.

Sors immanis
et inanis,
rota tu volubilis,
status malus,
vana salus
semper dissolubilis,
obumbrata
et velata
michi quoque niteris;
nunc per ludum
dorsum nudum
fero tui sceleris.

Sors salutis
et virtutis
michi nunc contraria,
est affectus
et defectus
semper in angaria.
Hac in hora
sine mora
corde pulsum tangite
quod per sortem
sternit fortem,
mecum omnes plangite!

Answer 4

The song is "Love Will Keep Us Together" by The Captain and Tennille.

Answer 5

I think, though couldn't guarantee, that it is Carl Orff's "Carmina Burana" that you're looking for.