Innocence & Despair or: Children cover pop songs - - - creepily.
There is an album called 'Innocence and Despair' by Langley Schools Music Project.
It is basically a very badly recorded album of school children singing popular songs, including 'Good Vibrations', 'Desperado', 'Mandy' and 'Space Oddity'.
The poor quality makes it incredibly eerie and just damn strange. But strangely haunting and I can't stop listening...
It's on iTunes and eMusic! Creep yourself out!