Here is what many wish not to hear. A commercial, ‘hit’ song is about 3:30 min. to 4:30 min. in length. It goes from verse to choruses rather quickly. Another verse and chorus, a bridge, a solo, and finally another chorus or two follows it. This stenciled approach to writing leaves little to the imagination. However, there is a reason why this structure is so effective. The chorus is usually what sticks in the heads of listeners. Having simple verses and many choruses makes the song slightly more memorable, at least in the marketing sense.