Since 1982 or thereabouts, an early CD of "Dark Side Of The Moon" has been playing non-stop on a continuous loop in a Philips Sony showroom (I think in Southern California). Purportedly this exercise was intended to show the durability of the compact disc which was introduced to the public that same year. One Philips-Sony spokesman said at the time that you could play a compact disc a million times and it would sound as good on its millionth spin as it did on its first.
Since the running time of this album is about 42 minutes, this means that that CD has now been played 337,421 times now - apparently without any loss of fidelity whatsoever. "The Great Gig In The Sky" sounds as crystal clear as it did on it's first spin some 27 years ago!