Infinitesimal Tesserae

My playing's been really bad today. I don't know why. Alan said I sounded good, but I kept making really stupid/weird mistakes. And, apparently, my quintet was dropping beats [according to Alan], which didn't help since I didn't know what the music sounded like [I missed playing it yesterday because I was in the clinic].
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[we're having a brass rehearsal tonight at 6:15, so I can't come on before dinner]
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I don't really have much else to say, as I haven't done course 2, explorations, brass rehearsal, or "college night" [tonight @ 7].