What is this older acoustic song/band?

I saw the music video of this really catchy song maybe 70's/80's era.

It was a larger band, about five or six members, maybe more. They're all sitting in a cart on a train playing acoustic guitars.

every verse or chorus it switches to another singer. They were all smiling and looking around at each other.

Im not sure, so don't quote me on this one, but I'm pretty sure the song had something to do with "everything being alright" or them singing "everything's fine."

It was certainly optimistic.

It was an all white male band. I remember one guy had curly hair, another had long blond hair and I think a mustache.

They didn't dress like a rock band or even sound like a rock band. They dressed like average guys in that time period.

Anyway, I remember listening to the song and really liking it, but I completely forgot to look it up.

Thanks