Rock Pig
I was given the fridge magnet pictured on this page by a very good friend a few years ago, and was slightly surprised, and underwhelmed at the time, as I am sure my face gave away...
But now I am putting out pig-related geocaches, it has been a great source of inspiration.
This is the one that really breaks the rule. This is a song that I really love about pigs - all the rest are so-so at best... I remember when this came out as a single (it is a second pig-related track off Nine Inch Nails' 'The Downward Spiral' album) I was in Glasgow, and after collecting money for charity, we ended up at the Strathclyde University Student's Union. They had a rock disco on and I got the DJ to play this and I got to dance very frenetically for a good few minutes. Twice. Ah, fond memories.
Although I love these songs, I am over 18, and rock isn't always for children, so if you seek out this music (which I heartily recommend you do), here is my parental advisory sticker:
Beware of sudden Muggles in this location. And mud.