I think it’s a fab idea!
How many sermons has the average Christian heard, the contents of which they can’t remember (though, I think we go about things wrong if we think we need to remember what the 3 points were every Sunday. I couldn’t tell you the contents of any one sermon I heard in my formative years, but the bank of information slowly grows as you remember and synthesise bits & pieces)? How valuable a tool is it if, every time that song gets played on the radio, people are reminded of a passage & a point.
That’s what I want out of an illustration!