Here are some notable differences in music regarding the ColecoVision port of Mr. Do! vs. the arcade version:

* The first movement of the level theme remains; but the second movement (the "Can Can" music) is replaced. The second movement music from the CV version was also used as the intro and stage clear theme in the Atari 2600 port.
* The stage clear/pause music is actually the name entry theme from the arcade version.
* The Alphamonster+Munchers theme is replaced by a dull beeping sound.
* The life lost music is also replaced by a different tune.
* Game Over theme is the same.

Do you think that the CV version of Mr. Do! could've been audibly better than it was?

~Ben