I very much agree with you Jon and Lesley. Cat Stevens would probably be the definitive version for many people, but to my mind, Aled gives a very special touch to the song. He created a deeper sincerity and a mellowness that isn't as prominent in the original, much like the contrast between his version of 'For Once In My Life' with Stevie Wonder's original, although in the latter song, I think the contrast there is even more dramatic, with Aled's being more touching and romantic.
http://tw.youtube.com/watch?v=CSIGoYvwVmU&feature=related
Aled interprets music so beautifully, and it's the velvety tone in his voice that gives the uniqueness in his songs for me.
Susie xx