Ostinato Study

(For the nonmusician: Here is a definition of "ostinato". "Ostinati" is a plural of "ostinato".)

Here are the sound and score of a quick study for a yet-untitled work involving ostinati. I haven't composed anything with an ostinato for quite a while - mostly because it's really hard! Many young composers have fallen into the trap of using ostinati without good reasons, and the results are generally directionless and forced. The difficulty, as always, is narrative: how can a narrative progress if it is bound by a repeating pattern? It's not impossible to compose interesting narrative music bound by such patterns, of course (I'm thinking of the music of Bach and Brahms here in particular), but the challenges of doing so are significant.