If you’re working on a song and have the line…
“The best in the world”
You might follow it up with…
My favorite girl
As the moonlight swirls
Finer than pearls
But you decide those aren’t quite right so you spend an hour flipping words trying to crack that line.
Your problem might not be the second line.
It’s the first line that is giving you the boundaries for the second. If you don’t like the boundaries, change them. Change the first line and open up new doors for the second. Or if you land on a great second line, change the first one to fit the second.
Sometimes you need to go experiment backwards to move forward.