Three verses with choruses, is about right, 4-5 verses, if it's a song without a chorus. However, a folk type song has as many verses as required to tell the story, and that's the great thing about our music. We don't have to rigidly stick to a 2-3 minute constraint to please a radio station, or DJ.

I think the longest song I've written has nine verses, but thankfully no chorus.