Chordorhea gets my vote. Chordomania for polite society.

I have a theory (I know; big deal) that keyboard people do that to us, perhaps unintentionally. I.e., I've seen a lot a sheet music specifically hyped as "a wonderful piano arrangement of x" or the same for organ, and you get not only a new chord on every 32nd note, but half of them are E-flats. I think that comes from the nature of keyboards, which, IMO, make it just about as easy to play one chord as another, at least when compared to the lute family. Only in jazz do you really want all those changes--and probably not even in all sub-types of jazz.

Chicken "Keep It Simple" Charlie