Translate- Japanese to English?

Question

Can someone please translate:

～オー・ツー～

to English? It's the name of a song. It's also very likely that it's rather nonsensical.

Answer 1

It says "oo tsuu".

Isn't that the opening song for Code Geass R2 by Orange Range? In the credits for that they call it "O2～オー・ツー～". Oo tsuu is the Japanese pronunciation of O2.

Answer 2

O--tsu--~~

That's in Katakana Japanese. オ（O）ッ（Tsu）

Because of the －、It'll be Oo--Tsuu--

Hmmm,　Could it be 「乙」？The Kanji for Otsu？

If it's from a Japanese song, then I think it's like "Yeah!" or something like that.

Answer 3

Oo Tsuu

Since it's in katakana, it's supposed to represent, "Oh, two"