Works just as it says in the list. Install instructions were comprehensive and simple to follow. The display itself is fast and, while not mindnumbingly beautiful, a pleasant distraction and tied in perfectly to the music.
Featurewise there's plenty to play with - the only option that seems to be absent is one to add/remove arms to the spinning star. The reset command should be expanded to reset ALL parameters though, to encourage more experimentation on the part of the user.
The little bars might be more smoothly rendered, and there could be more information in the help screen (what elements do TGBF refer to, etc.); the use of + and - to adjust "mountaining" requires the use of Shift for one of the keys, which can cause autorepeat errors if you release/depress the shift key at the wrong time... Otherwise, this works well. Nice to see such a polished product offered as an initial release.