Granted, it's not Mystery Song, lamentably so.
But it was Francis Rossi's master plan all along to turn the mighty Quo from a rock band into a pop band with a rock'ish backing - and he succeeded in the end. I prefer mid-70ies Quo as well, but have come to terms with the later versions.
That song is a bit on the cheesy side, true, but then cheese and (especially later) Quo were never two different worlds:
One thing you can say about them that they are absolutely fearless in defying serious-minded rock convention in their vids!