From the opening deep rumblings of this disc, it is immediately clear that this is something unusual. Comprising six works for hyperbass flute and tape, the environmental concern is obvious from the title. Each work concerns a glacier that still exists, using sound to describe the life-force of nature which is inherent in these landscapes. The instruments used are quite extraordinary. The hyperbass flute, an invention of the performer and composer Robert Fabbriciani, is the largest and lowest member of the flute family. Combined with a tape part of natural sounds and pre-recorded hyperbass flute, these compositions are soundscapes which are full of imagery and suggestion - the first track even made me start shivering! The sounds really are incredible, and I felt an urge to take the disc to a recording studio to hear the low sounds through speakers of a higher quality than my home stereo in order to get the full effect.