I'm posting this early, as I'm now off to celebrate my (66th) birthday and might not be in a fit state tomorrow - indeed I started celebrating last night (so judge 'fit stateliness' for yourselves)
Regarding the song: Harry Chapin (though not very well known in UK) has always been an inspiration to me - I was at this last UK concert in January 1981 and I know I do not do his music justice, but it makes me feel good just trying to perform it.