Mouth

The mouth is the center of many of the fundamental components of human activity. It is consumption, speech, breath, romance; it is communication, interaction, almost a door to the soul. As the mouth of a river, it assumes the meaning of a door or gate, which lends access to another realm of existence.  Information taken from:   Online Symbolism Dictionary

A sexual symbol, representing the vagina (Freud).  Self-
expression. Is there some part of you that has not been allowed to express itself, such as your creative self? Are you bottling up your emotions?  Perhaps something is threatening to swallow you up. 
From - Dream Dictionary 

  Songs referenced: 

Crucify

Don't Make Me Come to Vegas

i i e e e

Mary

Pandora's Aquarium

Past the Mission

Professional Widow

Silent All These Years

Time