Invention

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It's a nice inventive piece.  Because of your liberal use of scales without any kind of hook or turn to create a more interesting motif, it comes off a little bit like a scale exercise.  It's very rhythmically square too and the tempo change near at the end sounds very artificial.  You do create some harmonic and melodic interest with your use of the minor subdominant though, so good job there.  Thanks for sharing.

The best is the contrary motion. I think you were careful with this. But with proper motivic manipulation it would be much better.