My dad used to make up compilation tapes for us and this (below) was a great favourite.
I remember singing it to my class at school, no accompaniment. Since I can't sing in tune and couldn't remember all the words when confronted by a sea of small bemused faces, it was a little bit excruciating. I just kept going round and round while my classmates put their heads down and their shoulders started to shake. God knows how many times I sang that chorus. The teacher had to stop me in the end. That single act should be the dictionary definition of 'merciful'.
It's been 36 years since that notable day. I am told that time heals, so no doubt the chagrin will fade eventually.