Sorry, m. It was just meant as a tongue in cheek sign-off. Perhaps I should have added a :). No way was I trying to interfere with your other hobbies :). My reference to 'changes in idiom' is perhaps significant.

Another angle is to look at the likely writers of songs that included 'jolly/merry/happy' in their titles, people scraping out a living in the metropolis writing unrealistic songs about the lives of people they had little concept of.