Not really since it is not composed note for note but altered every time through a mathematical system. If you check the website and click the WHAT link it will explain. Here's an extract:
Longplayer was developed and composed by Jem Finer between October 1995 and December 1999, with the support and collaboration of Artangel. .... A full account of Longplayer's development can be found in the 2003 book Longplayer, published by Artangel, London.
Longplayer is composed in such a way that the character of its music changes from day to day and – though it is beyond the reach of any one person’s experience – from century to century. It works in a way somewhat akin to a system of planets, which are aligned only once every thousand years, and whose orbits meanwhile move in and out of phase with each other in constantly shifting configurations. In a similar way, Longplayer is predetermined from beginning to end – its movements are calculable, but are occurring on a scale so vast as to be all but unknowable.
Longplayer’s composition uses a minimum amount of information and material to create the maximum amount of variety, in terms of both sound and form. While it is a system-based composition, it is made out of very expansive and resonant musical material, which in itself is not ‘systematic’ sounding. This material (the ‘source music’) is played on Tibetan singing bowls, which possess a simple but harmonically rich sound, and a quality which is at once both physical and ethereal. A simple form of synthesis arises from the interactions of these instruments’ waveforms, with the consequence that while Longplayer’s score is deterministic, its music at any given time is unpredictable.