SOS!!!求歌，请问有谁知道这几首歌叫什么啊？

http://v.youku.com/v_show/id_ca00XNzQyOTU1Ng==.html
这个视频里面的几首背景音乐很好听，我想下载MP3,可是不知道歌名，谁能告诉我啊？谢谢啊~~~
第一首是I will believe it...谢谢，后面那两首啊，如果还有其他好听的也谢谢了，恩，提多一个要求，谁能找到keep your mind wide open的MV下载地址啊？

第一首是 I will believe it

第二首是 ？？？

第三首是 I don't know... Erika 唱的
歌词如下：
In my soul , In my soul ....

I am not a baby anymore
I am not a same sin as before
I see it in the mirror , in my room
And i can feel it stronger in my soul
But I don't know if its the right day , for this words
Now I say things I didn't say before
I need an explanation, tell me more
Why am I alone now? I don't know

How can I live forever? I don't know
Where can I find Heaven? I don't know
What is going to happen? I don't know
Why am I alone now? I don't know

I don't know x2
In my soul, In my soul...

I live it for my darling , and I will
That am I leaving problems down our feets
I want to live my feelings day by day
I like to give emotions , in my way
But I don't know if its the right day, for this words