@koos I have a blog about pop music, so, when I need to write some album review, first (and obviously) I just listen to the album and write on notepad some references and infos about each track. Nothing deep, just little impressions.
after that, I listen again and begin to write with more details. After, I write my conclusion; in the end, an introduction to the track-by-track and voilà. I don't know if can work with your subject, but...
@koos what about writing a condensed idea of the entire article as the intro?
@srtaveneno yes I like the writing the intro as a final thing. It's where I often get stuck when I start with it.