well, i think children of the future will be used to lullabies like that
i played it to my sister and she's a child, musically, and she said it reminds her of being drunk and feeling everything swaying around. so, i believe it's a good metaphor for the movement that caries through the piece. it moves like a pulsating swaying circle. contracts, expands. and generally it's just few xylophone lines being played overlapping, counterpoint like, and moving away, overlapping less, spacing, which results in less sound and slower pace. then there's the cut and the higher sounds,like a second image of the tail, tail's tale.
thanks for listening and commenting.