Line

The line divides, measures, and binds; a straight line is infinite, and may symbolize the path to man s destiny.  When the line is horizontal, it reflects the temporal world, and when vertical it reflects the spiritual realm.  A sinusoidal line reflects motion, as in the movement of oceanic waves, and a straight line reflects an undeviating line of conduct.  Information taken from:   Online Symbolism Dictionary

  Songs referenced: 

Alamo

Crazy

Heart of Gold

I can't see New York

mrs. jesus

Pandora's Aquarium

Real Men

Space Dog

Suede

Talula

Yes, Anastasia

your cloud