Help! I need to find a song

[juanh]

Hi there, i get here ramdomly, by chance, i want to know the name for a song I guess between classical and religious I remember pure chorus fom an angelical female voice (charlotte church style) and no background instruments that goes slowly laa laa laa laa 2 or three times and finish laa laa laa laa laaaaa.
pardon me sounds stupid but its all I remember.

[juanh]

Forgot to say that sounds pretty melancholic