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Hans W Koch: The O. Theorem - VINYL LPTitle: The O. Theorem Artist: Hans W Koch Label: Edition Telemark Product Type: VINYL LP UPC: 769791970861 Genre: Rock Release Date: 2018 10 19 Number of Discs: 1 Hans w. koch (b. 1962) is a Cologne based composer, performer, and sound artist. His work encompasses pieces for chamber and large orchestra, experimental scores for instruments, computers and everyday objects, sound installations, electronic music, etc. He summarizes his art as being about
Title: The O. TheoremArtist: Hans W Koch
Label: Edition Telemark
Product Type: VINYL LP
UPC: 769791970861
Genre: Rock
Release Date: 2018-10-19
Number of Discs: 1
Hans w. koch (b. 1962) is a Cologne-based composer, performer, and sound artist. His work encompasses pieces for chamber and large orchestra, experimental scores for instruments, computers and everyday objects, sound installations, electronic music, etc. He summarizes his art as being about sculpting thoughts in diverse material and prefers conceptual approaches: "more thought, less material". koch studied composition with Johannes Fritsch and currently is professor for sound at the Academy of Media Arts Cologne. Since the 1980s, koch has been concerning himself with the concept of "total harmony" (harmonie totale) introduced by Russian composer Nikolai Obouhow (1892-1954) where all twelve tones of the Western tonal system - in different octave ranges - are stacked into chord complexes, thus articulating the idea of a vertical twelve-tone music, as opposed to the horizontal twelve-tone music after Schönberg. Less than the mystical connotations expressed by Obouhow, koch is interested in the conceptual potential of this approach: a self-contained harmonic system in which every chord is an inversion of every other. Koch has made several works relating to total harmony and calls this work group "the O. theorem". This LP presents two pieces within this group: "stele fuer n.o." for large orchestra (2010) was premiered at the festival MaerzMusik in Berlin in 2010 with the Konzerthausorchester Berlin. "clock of fifths [totensonntag]" (2017) is an electronic piece where a field recording of church bells is filtered through a smartphone app developed by koch: The microphone signal is divided into twelve tone pitches that are heard in accordance with a timer that moves through the circle of fifths shown on the smartphone display. Full-color sleeve; includes printed inner sleeve with liner notes by Volker Straebel and hans w. koch. Edition of 300.
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4.7 ★★★★★
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Product Reviews
★★★★★ 2
Worked for only 4 months. Now produces metal shards. Dangerous
Pros: Can be used with one hand. I bought this to have after surgery that left me without use of one arm for a few months. The light blinks when you need to charge it. Only needs a 2-3 min charge for enough juice to open a can.
Cons: IT QUIT CUTTING CORRECTLY AFTER 4 MONTHS. I now have to use both hands to hold it in place to get it to latch on to the can. It also requires a few rotations around the top to cut through the seal, resulting in METAL SHARDS! The metal shards are super sharp and almost invisible. I stabbed myself with one enough to draw blood. This is dangerous as the metal could fall into the food when pouring from the can.
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Reviewed in the United States on January 10, 2026
★★★★★ 1
Can opener
This product does not work well! It actually doesn't work at all!! Will not cut thru can lids at all. Very disappointing to say the least. I purchased to make things easier only to be left not being able to open dinner 😕. Would not recommend to anyone!!!
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Reviewed in the United States on May 15, 2026
★★★★★ 4
Can opener
It doesn't shut off by itself when done and doesn't shut off when I push the button, so after a while it will shut off but when it wants too after you take it off the can ,like 30 seconds. But I do like the way it cuts, a clean cut and lid removal nice.
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Reviewed in the United States on February 2, 2026
★★★★★ 5
terrible item
it worked a few times and it doesnt work at all! Terrible item!
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Reviewed in the United States on June 7, 2026
★★★★★ 1
Very dangerous metal shavings!!!
Negative stars if I could.
This is a very dangerous product. It worked well for a while. But then it quit effectively removing the lid instead I got little tiny shavings of metal around the edge. These shavings of metal go into the food and very dangerous.
So this was a waste of money and incredibly dangerous. I am throwing it in the trash today.
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Reviewed in the United States on March 25, 2026