Here's the gap-filler to accompany Perenepsis #13, and it's also been finished for about a week. It's probably the most lyrical entry in this series, although I don't think that's exactly what I set out to do here. The subtitle to this one, as with #13, is a reference to the opening idea, this time being a repeated figure of a descending fourth.
This piece starts out as though it's going to be simply a theme and variations, but after four times through the initial 6-bar phrase, there's a contrasting section, then a return to two instances of a four-bar version of the opening theme that is shifted down a fourth (D to A becomes A to E), before a brief ending section that lands on an open A chord with no third in it. The last note before this chord was going to be a C, to strongly suggest A minor, but I changed it to a D to serve as a final "falling forth" to the A; the final chord still has a minor feel to it, but I think the D works better both logically and audibly.
While there is a good bit of repetition here, no two bars are exactly alike (except at the very end, where the closing chord is held across three bars of 5/4). This one's about a minute longer than #13, but I would say that it's a little less complex, and maybe more relaxing.