The updated version of Block Drop Battle features enhanced mixing (especially in terms of drums), more arranging and Chill from Dr. Mario.

The base for the song was the music for the last 3 boss-like enemies before Bowser in Tetris Attack. It also played in Panel De Pon (which was basically the same game), as the music for the first two bosses. I always liked that song, although there's really not that much to it.

(If you're wondering, version 2 and 3 are the same, there was an issue with the mp3 converting that day, which made me try to upload the file again...the problem has been resolved afterwards and the files were both converted correctly, so...long story short: both are the same, my bad)