是美国另类摇滚乐队30 Seconds to Mars于2009年11月8日推出的第三张录音室专辑。同时也是该专辑中的一首同名歌曲。专辑一经推出，立刻大受欢迎，在告示牌200（Billboard 200）中排名第18，截止2012年全球销量突破500万，之后2010年的世界巡演也被“吉尼斯世界纪录大全”评为举办最长的巡回演唱会的摇滚乐队。

开篇的千人合音为歌曲制造了恢弘气势，干净利落的鼓声配合吉他伴奏有效的调动听众互动，充满力量的主音配以大合唱将歌曲带到最高点，让听众自然而然跟随旋律走进歌中的“新世界”。而This Is War此曲MV表达了强烈的倡导和平，反对战争主题。

歌词下方是This Is War钢琴谱，希望大家喜欢。

This Is War歌词：

A warning to the people,

The good and the evil,

This is war.

To the soldier, the civilian,

The martyr, the victim,

This is war.

It's the moment of truth, and the moment to lie,

The moment to live and the moment to die,

The moment to fight, the moment to fight

To fight, to fight, to fight!

To the right, To the left

We will fight to the death!

To the edge of the earth

It's a brave new world

From the last to the first

To the right, To the left

We will fight to the death!

To the edge of the earth

It's a brave new world

It's a brave new world!

A warning to the prophet,

The liar, the honest,

This is war.

To the leader, the pariah,

The victor, the messiah,

This is war.

It's the moment of truth, and the moment to lie,

The moment to live and the moment to die,

The moment to fight, the moment to fight,

To fight, to fight, to fight!

To the right, To the left

We will fight to the death!

To the edge of the earth

It's a brave new world

From the last to the first

To the right, To the left

We will fight to the death!

To the edge of the earth

It's a brave new world

It's a brave new world

It's a brave new world!

I do believe in the light

Raise your hands into the sky

The fight is done, the war is won

Lift your hands toward the sun

Toward the sun

Toward the sun

Toward the sun

The war is won

To the right, To the left

We will fight to the death!

To the edge of the earth

It's a brave new world

From the last to the first

To the right, To the left

We will fight to the death!

To the edge of the earth

It's a brave new world

It's a brave new world

It's a brave new world!

A brave new world

The war is won

The war is won

A brave new world

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