> An audio example of Transit is over here https://dl.dropboxusercontent.com/u/124465398/Transit5b_5_20... (my recording) it sounds like some kind of melody song.

This is in fact quite incredible to listen to. There seems to be a lot of "character" encoded in it. It goes through long and slow periods, parts with rapid notes, etc. Definitely worth a listen and pondering what kind of data it's "talking" about.