want to add a song to spotify

[aussiedigger]

I have a great song by Karl Sapp welcome home is a song of soldiers who are coming home from fighting its a beautiful song but its not on here tell me how too add it and also I cant play it on my phone   

[MattSuda]

Spotify tries really hard to get music available on their service, but in the end the availability of music on Spotify is up to the artist and their music label.

This thread by Spotify staff explains why some music is not available:
https://community.spotify.com/t5/Content-Questions/I-want-an-artist-song-on-Spotify/td-p/1136005