That one is "Destiny". The first section of the full version is exactly the same as "Mother Earth", but the melody behind it is different. The section you want starts from 01:10 and 02:14 (***there are two sections).

But this song "Destiny" has not been included by the crew, and I haven't found it in mp3 format yet... Sorry... but I can give you the address of Tudou ~ /programs/view/7bOZYQsowTs/ You can use a tape recorder to record that Record it into mp3~ and you can save it~ I used the voice recorder that comes with Windows, and after changing the recording limit, I recorded a complete record~ You can try it~