Maybe I was wrong about producers after all. After "take off" I've received another tune that requires matching lyrics. And more are in the pipeline. Song #2 is supposed to have a summerly atmosphere and deal with 'making off' (I'll probably have to find a title that differs a little more from "take off").
I've also got the basic structure: verse, pre-chorus, chorus, verse, pre-chorus, chorus. That means I'll have to write four parts, two verses, a pre-chorus, and a chorus. I've only listened to the music once yet. I will decide which part I'll begin with when I'm a little more familiar with the tune. Normally, I write the chorus first.