One thing that makes music so powerful is the lyricist (usually) has only a few minutes to say what he or she really wants to tell us.
Think about the of potency in brevity when communicating a truth. That one line of a song–maybe even a few words–really can sink in deep. Or sting hard. Or kick your butt. Inspire you to action. Comfort in sorrow. Become an anthem.
Powerful ideas do sometimes take more to explain, but not as often as we think.