If so, this speaks to the flexibility and functionality of music, which is a good thing in my opinion.
I love art on its own terms, but I also embrace the concept of functional art. That is why I have Eames chairs and a Saarinen pedestal table in my kitchen.
While the leftist/singalong thing may be perceived as creepy or corny by some - including me, admittedly - I would love to live in a world in which music offered a form of cultural currency with some value. Music offered this back then, but it is virtually worthless now.