Tom Lehrer has put all his songs online (including lyrics & sheet music), and given away all rights

[Warpy]

8. He was sonederful as a performer, just a little too cerebral for Middle America

but a lot of his songs have aged very well, like singing the periodic table. That one won't have to be updated much until they find out how to make the heaviest lab created atoms stable in the present universe. They'll be added in a few tens of billions of years, but until then, the song will remain unchanged.

One of my faves will always be "Poisoning Pigeons in the Park," something shared by anyone who's ever tried to exercise on a bike path that goes under a bridge that absolutely rains pigeon poop. I've never poisoned a pigeon, in a park or elsewhere, but I've certainly thought about it. Often.