According to the website The Burgess Shale Suite does not seem to have been performed live since 1994.
Perhaps then it mimics the animals themselves; a brief explosion of performances, then a gradual disappearance, leaving us with ghost-like impressions on the internet to tantalise us and truly wonder what it would been like to experience a live performance.
Perhaps in a few years, the Suite, long since forgotten, willl be dug up by a musical palaeontologist and reinterpreted; some sections will be interpreted as avant-garde, others as progressive, jazz even, in an attempt to shoe-horn the pieces into familiar musical styles. Ultimately the suite will have been regarded as useless, a music experiment in styles and forms that left no descendants.
Thank goodness, because it was flipping awful.