Piano Tinkle - Sounds quite a bit like something I would write. It is elegant and refreshing. I think it could possibly use some more melody in certain sections. Obviously, I wouldn't want you to change the part with the fast, flowing arpeggios, but just think a bit about melodic use. Also, think about adding some more color to your chords. You have major and minor diatonic chords, and some sevenths. Could this be enriched with some modal chords or borrowed chords? Just a thought.
Cat in Heaven - Once again, there is very little as far as melody goes. But the rhythms are catchy and fun, and the form is solid and convincing! I really enjoyed the watery, soft interludes between the rhythmic pounding sections. I appreciated the semi-modulation you used, and the colorful chords. About the crazy section with fast arpeggios - did you play this, or is this a computerized recording? Those broken chords are ridiculously fast!
Hang out with the Tapir - Love the chords you used in this piece. Great intro, and sweet groove! I don't think the trumpet part would be practically possible for most performers, but it sounds cool as is. I noticed that you use melody way more in this piece than in the first two. Very neat, overall! Nice job.