Someone's asked me if I can help track a song down for him and I immediately thought of you lot!

He thinks it's called 'Katrina' or 'My
Katrina', and includes the line,

'As we walked by the shore,
hand in hand like before,
my poor heart was sore for Katrina'

Anybody know the song and if a recording of it is available please?

Thanks for any help you can give.

Cheers
Mark