"Cope's Triplum is a magnificent realization
for the medium, an inspired contribution to its literature. Many works
using special techniques are found to be containers in which the effects
are so much gas being pumped into them. Not here. There is no special
pleading in calling for the plucking, pinching, and striking of the
piano strings, the hitting of the piano's crossbar, the bent flute
pitches, the singing and whispering of the performers, etc. All are
justified qualities in terms of the tale, convincing synonyms that
keep the ears concentrated, from the initial part built out of doublings
of contrasted timbres to the concluding four measures which consist
only of whisperings."
--Arthur Cohn, Guide to Recorded Music, p. 428