Dear Sherlock...
xxx
You got the "Happy Trails" melody quite correct as origin for my "contrails".
But the original "Happy Trails" was the sign-off melody of cowboy Roy Rogers.
Goes back to the early 1950s... black and white Western movies.
I have used "Happy Contrails" probably for... 30+ years.
xxx
Piano academy/conservatory, I was not too succesful as a teen.
Mother wanted me to be the next Van Cliburn or Philippe Entremont.
But massacred Freddie Chopin, and Fliszt (as Victor Borge used to say).
Mother was a piano teacher and somewhat notorious violonist in orchestras.
And I was more interested in going to see airplanes at the airport.
xxx
So we play anything that people like. Here tango of course. Piazzola, Gardel...
A dash of Brahms or Dvoräk, a bit of of jazz or pop music to please the crowd.
Many people like Fritz Kreisler light classical piano/violin duos here too.
When I go back to Brussels, sometimes join a band of Hungarian gypsies for fun.
Same deal - free drinks and goulash in their restaurant.
Got a Bösendorfer concert grand at home in Buenos Aires... 1910 vintage.
And a Yamaha baby grand in Florianopolis - 1980/90 junk...
But I can speak music almost as much as aeroplanes.
xxx
Greetings from Watson - and... "happy contrails" always.