YouTube user Retrontario frequently uploads fantastic retro-Toronto-centric gems. These clips never fail to bring back a ton of memories for me, so I feature them from time to time.
One of my brothers used to tell me they knew the girl who appeared in the "Happiness is Marineland" ads that air every summer. The story was that her father composed the song. I don't know if any of this was true, but I do know they've been airing that same ad and song for what seems like a hundred years.
It turns out Marineland had a theme song before that one. Here's the original Marineland theme from 1983. It's not quite as zippy.