帮帮忙 piece of heaven是谁唱的？

是Cascada.

http://cn.last.fm/music/Cascada/_/Piece+Of+Heaven

是Weiβ演唱的。

Weiβ不是一位声优的名字，而是一个由四位男声优组成的声优团体。他们四位都是在日本鼎鼎有名的声优，因为一部动画《Weiβ Kreuz》而正式组团，开始了声优的偶像化路程。他们四位分别为：子安武人（aya）、关智一（Ken）、结城比吕（Omi）和三木真一郎（Yohji）。
<br>歌词为
<br>The minute you walked through my door
<br>I knew this love is forever more
<br>But then you told me all these lies
<br>See the tears filling up my eyes
<br>
<br>All I want, is a little piece of heaven
<br>All I need, a little piece of heaven
<br>
<br>Piece, of heaven
<br>
<br>All I want, is a little piece of heaven
<br>All I need, a little piece of heaven
<br>
<br>Naaaa, na na na na na na, na na na
<br>Laaaa, la la la la la, laaaa laaaa laaaa
<br&g