Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.
Childhood Songs 4 Mr Froggy
This is another Singing Together memory. I particularly used to like hearing this Burl Ives on the radio as a kid. Ives had such asweet voice and I now see was no mean guitar player.