See the 1893 version linked above. The links are still good. It's a typical song of nostalgia and remembrance.

I was intrigued by the phrase 'back of Bennachie.' What exactly would be the back of a mountain? Wikipedia has a nice article about Bennachie, which is actually a range of mountains, not a single mountain. There are photos and a description. Just google 'Bennachie.'

I suppose the 'back of Bennachie' is merely the side of the range which is less inhabited.