" One still unused experiment from this time was an exploration of backward vocals. A phrase written out backwards letter for letter and then read out will not sound correct when reversed, but a spoken phrase recorded and played backwards can be learnt and recited. This gives a very odd effect when it is in turn played backwards. ‘Neeagadelouff’ was one I remember: it should come out as ‘fooled again’. "

― Nick Mason , Inside Out: A Personal History of Pink Floyd