Writing lyrics first. I do it a lot lately. Lately, as in the past couple years or so. As some have already pointed out, when you work at a desk job with the computer, it can go hand-in-hand with documenting your song ideas. Why not go lyrics first?
The problem can be, writing some "great" lines that mean a lot on paper but have no musical value, or the musical value ends up being very pedestrian and stock.
Why?
For me, the reason has been a reliance on symmetrical patterns. We start writing and our personal, limited experience with doing it this way results in little nursery rhymes with adult themes.
So I dug into studying the lyrics of Ira Gershwin, Bob Dylan and Cole Porter. And I began searching for the patterns. The patterns or deviations from symmetry. Set up an expectation and either deliver too soon or stall promised resolution of the phrase. Or deliver as expected this one time.
Because the Rockies make crumble
Gibraltar may tumble
They're only made of clay but
Our love is here to stay
“The truth is the whole.”
- Georg Wilhelm Friedrich Hegel
"It is easier to discover a deficiency in individuals, in states, and in Providence (and in pop songs), than to see their real import and value."
- Georg Wilhelm Friedrich Hegel