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.
Bragg on Solomon
I'm a bit behind with me Melvyn Bragg but if you check out the website here you should be able to find the one on Solomon, which though very secular was nowhere as near as anti-conservative as it might have been and worth a listen.