It's the beginning of a brand new day is a 1940s radio exercise tune, which was heard daily. Many different variants exist of the song. Several of them have been used in the Gantz franchise.
Lyrics[]
| Japanese Kanji | Japanese Rōmaji | English Translation |
| 新しい 朝 が 来た | Atarashii asa ga kita | A new morning has come |
| 希望 の 朝 だ | kibou no asa da | This morning of hope |
| 喜び に 胸 を 開け | yorokobi ni mune o hirake | Opens(fills) your chest(heart) to(with) happiness, |
| 大空 あおげ | oozora aoge | The sky is big and blue. |
| ラジオ の 声 に | Rajio no koe ni | At the voice(sound) of the radio, |
| 健やか な 胸 を | sukoyaka na mune o | Fully open(fill) your chest(lungs) |
| この 香る 風 に 開けよ | kono kaoru kaze ni hirakeyo | To(with) the fragrant of the wind. |
| それ 一 二 三 | sore: ichi, ni , san! | Then 1, 2, 3! |