If I was hearing right, one singer appeared to have unfamiliar verses in This Land is Your Land. I did catch one line "...on the back side, it didn't say nothing" -- followed by a smattering of applause and laughter from people in the audience who had better hearing aids than I do. So today I googled the phrase and found original verses that record companies omitted in the days of the Commie Scare and the Cold War:
Another P. S.: Some years ago I tuned in to the CBC -- used to pick up Toronto nicely in the car -- and came in on the last few minutes of a program that was bewailing the US influence on Canadian Culture. Even our movies copy them, the host complained. And then there's all that pop music from the States ...etc. etc. And then the program ended with his usual theme song:
This land is your land, this land is my land.
From Bonavista to Vancouver Island
From the Arctic Circle to the Great Lake waters
This land was made for you and me.