The tape was recorded as a demo tape in 1990 and is also known as the "Pink Tape". About 2,000 tapes were produced but were mastered incorrectly, with the songs playing too fast.
Magnetic tape recording as we know it today was developed in Germany during the late 1930s by the C.
Development of magnetic tape recorders in the late 1940s and early 1950s is associated with the Brush Development Company and its licensee, Ampex; the equally important development of magnetic tape media itself was led by Minnesota Mining and Manufacturing corporation (now known as 3M).
The typical professional tape recorder of the early 1950s used ¼" wide tape on 10½" reels, with a capacity of 2400 feet (731.5 metres).
Music concrete was recorded directly to tape with real (concrete) sounds, while musique abstraite was the traditional way of composing by writing down the score to be played later.
Reversing the reels of recorded material and playing the tape backwards can be used to create reverse reverbs, attacks, etc. Recording the reversed track to another tape deck is the easiest way, although bouncing the reversed track to an empty track on a multi track can be done.
Pink Floyd made the use of tape loops the basis of Dark Side of the Moon (like the Beatles albums, recorded at Abbey Road).