You may have never heard of this game, or if you have, you may have not have heard this song. This song can be played at anytime in the field, so it is difficult to specifically say where in the game it is from. It's tied to Novus, the robot faction.
Here is
the download link.
It is packaged in the zip file and should be extracted to your blockland directory. Due to changes in version 9, it is no longer packaged. Save to your Add-ons/Music folder.