‘Music’ what really is it?
Music is a broad term that is the art of a artificially evoking emotions and feelings in a listener. Even if that listener is yourself when first creating a composition.
The amazing thing about a composed song is its ability to take the listener through the emotional states of the composer as they wrote the music granted they would have to be able to play and express themselves through it first. This also brings to me the idea that everyone actually has a musician inside their brain that could (if ability was granted) be able to write and express themselves through song as well.

What happens when you now add lyrics to a composed piece?
when you put lyrics behind it you drive thoughts with words to go along with the music. This is powerful and can make things like love songs bring back memories and fully propel the listener into the original state they would have been in when they were in love, this along with a backdrop now of the emotionally evoking song would make a person long for love again if done right.
its powerful stuff and so its also why i don’t really like to sing about forgotten/lost love unless its a positive message and puts a person into a powerful state as opposed to a longing or non-self reliant state of mind.

This all starts to drill down to the reason behind music and why do we even experience it in the first place?

It had to have been a by-product of evolution. Some Theorists believe it has to do with Sexual Selection. This is the thought that musical expression was a way to demonstrate reproductive fitness. This could be partly the case but I believe it’s more likely that music is a by-product of a different biological mechanism used for survival. It’s not something very well understood just yet but we do know that syncopation and tempo is something unique to human brains. the ability to catch on to a ‘beat’ and predict the next beat, like pattern recognition is something that other animals don’t have a good ability of doing. The evolutionary origins are certainly of interest and something i would like to further extrapolate when given the chance.