Most songs have bridges in them, to distract listeners from the main verses of a song so they don't get bored. My songs don't have a lot of bridges because lyric poetry never had them.
Bob DylanOnce I can focus in on something, I just play it in my mind until an idea comes from out of nowhere, and it's usually the key to the whole song. It's the idea that matters. It's like electricity was around long before Edison harnessed it.
Bob Dylan