(Part I) Ibm 1401 Processing Unit [MP3]
(Part V) The Sun’s Gone Dim And the Sky’s Turned Black [MP3]
The Sun’s Gone Dim [YouTube] [24MB HD MOV]
BM 1401, A User´s Manual - Live in Italy [YouTube]
The best way to describe Johannsson’s IBM 1401 was found inside, beside the CD on a narrow slip of paper:

In 1964, a computer - the IBM 1401 Data Processing System - arrived in Iceland, one of the very first computers to be imported into the country. The 1401 has been called the “Model T” of the computer industry - the first affordable, mass produced digital business computer . The chief maintenance engineer for this machine was Jóhann Gunnarsson, my father. A keen musician, he learned of an obscure method of making music on this computer - a purpose for which this business machine was not at all designed. The method was simple. The computer’s memory emitted strong electromagnetic waves and by programming the memory in a certain way and by placing a radio receiver next to it, melodies could be coaxed out - captured by the receiver as a delicate, melancholy sine-wave tone.
When the IBM 1401 was taken out of service in 1971, it wasn’t simply thrown away like an old refrigerator, but was given a little farewell ceremony, almost a funeral, when its melodies were played for one last time. This “performance” was documented on tape along with recordings of the sound of the machine in operation.
When my father told me about this in the year 2001, I felt that, besides being a nice, touching story, it reflected many things that I was interested in. Man-machine interaction, old, discarded technology, the nostalgia for old computers, human and artificial intelligence, technological progress and human evolution, the “spirit” and the machine. I started to write music using those themes, basing it on those 30 year old recordings of the IBM 1401 computer.

IBM 1401 was also adapted to a dance act, which has been touring around Europe for the last few years. A true masterpiece and one of the best albums of the last few years.

Links:
Official Website
The record’s official website
IBM 1401 @ Wikipedia