The Darkness by Nathan Wagner,
It's actually 5 songs that comes together to tell a story. There is different ways you can interpret these songs if you listen to them separately, but I recommend that you listen to them together 1st.
Song/Part 1 Victoria: A man who's trying to stop his best friend from committing suicide. But he fails before the song is over. (At the end if you listen closely you can actually hear her falling.)
Song/Part 2 Silence: He can't accept the fact that she's gone so he begins to hallucinate as if she never left. Pleading desperately for her to talk to him.
Song/Part 3 Blackout: He starts his journey into becoming an alcoholic. He's blinded by the brief moments of happiness that alcohol gives him. Eventually this leads him into doing drugs as well. (This is hinted at, at the end of the song.) He's just trying to do anything to forget his whole existence.
Song/Part 4 Deception: The alcohol has almost completely taken over his life. He's aware that he needs to change, but the alcohol and drugs is just so addictive. But he finally wakes up after seeing a man die from an overdose. Afterwards he starts to hear voices. Not the voices of his friend, but the voice of God guiding him onto a new path. At the end of the song he finally obtains the strength to break the cycle of abuse before he reaches the point of no return.
Song/Part 5 Light: The first half of the song is through God's point of view. He's reaching out his hand to help this lost soul. Telling him that things will get better because I'm by your side. The second half is through the man's point of view. He finally accepts that his friend is never coming back. He will follow the words of God, so he can become a better man. This way he can live life to the fullest for both him and his friend. (This is my favorite song of all time)