Do emotions make up the first human language?

On some level, the most basic of communication between
human beings had to reside on an emotional level.  The role of communicating emotions in
the very beginning of humanity's origin had to reside in the communication of needs,
wants, or desires.  From the most metaphysical point of view, human beings wanted to
communicate something that resided in the base of emotions.  If one examined how
individuals needed to convey something that was within them, it becomes readily evident
that this had to be a communication of human emotion.  Even the need to want something
is an emotional one.  If we really delved into the metaphysics of this, the only reason
one communicates with another is through an emotional frame of reference.  The first
form of language between two people resulted in a need to be validated or acknowledged. 
It resulted from a desire to be authenticated, and this is an emotional need.  The first
human language was driven by emotions because it was one of the first instances where
people were able to articulate something understood by another and this had to be an
emotional sensibility for those are the elements that most readily needed
communication.  Interestingly enough, those are the domains that are hardest to convey. 
This means, that the most pressing need to communicate, an emotional one, constituted
the first language, something that is still being refined today for putting one's
emotions into language is still incredibly challenging.