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5 Composers murdered by the Nazis

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Theresienstadt concentration camp, or Terezín as it was usually called, was an oddity, even by the Nazi's standards. They used it as transit camp, before carting people off to Auschwitz. But more than that, they used it as propaganda, the "model Jewish settlement"—the beautiful, special place where Jews would be resettled under Hitler's plan, before he went full-steam ahead with "The Final Solution." As such, people placed in Terezín were given privileges that the others were not. Concerts, theater, books to read—even opera.
The words opera and Holocaust very rarely make their way into the same conversation, let alone the same sentence. It is difficult to imagine, then, that an Austrian composer and pianist by the name of Viktor Ullmann not only contemplated the great operatic tradition while imprisoned in Terezín, but was actually able to compose one. Scribbled on the back of camp records and lists of prisoners to be sent to the gas chambers, Ullmann penned a work called The Emperor of Atlantis, which is largely about life and death having lost their meaning.

And while both the composer and the librettist, Peter Kien, were ultimately murdered in Auschwitz, the score was miraculously smuggled out and resurfaced in London before ultimately receiving its premiere some 30 years later in Amsterdam. I don't have any excerpts of the piece, but I do have another piece Ullmann wrote, and others by four more composers who were part of the unusual, sadly surreal musical scene at Terezín.

1. Gideon Klein

klein.jpgKlein was studying music in Prague when the Nazis closed all institutions of higher learning in the occupied Czech territories. He was sent to Terezín in December, 1941, but was then sent to Auschwitz and ultimately to Fürstengrube, where he was murdered in the gas chambers.
Here's an excerpt from his Trio for Violin, Viola and Cello.

2. Karel Svenk

coth02.jpgSvenk was an actor, director, writer, and composer before the war. Svenk was one of the artists who helped mount many productions at Terezín, including an all-male cabaret. He was murdered in 1945.

Here's an excerpt from his song, "Pod destnikem."

3. Erwin Schulhoff

Schulhoff23.jpgSchulhoff studied piano with Debussy for a short spell. He was even awarded the Mendelssohn Prize in 1913 for his piano achievements and won the same prize as a composer some years following WW I. He was sent to Terezín in 1941 and then murdered in the Wülzburg concentration camp in August, 1942.

Here's a bit from Schulhoff's Suite for Chamber Orchestra.

4. Pavel Haas

PavelHaas.jpgHaas was sent to Terezín in 1941, and composed several pieces during his stay, although only three of them have been preserved. One of them, Study for String Orchestra, was immortalized when a performance, in the presence of the composer, was included in the Nazi propaganda film, Der Führer Schenkt den Jüden eine Stadt. (Hitler gives the Jews a Town) Haas died in Auschwitz in October, 1944.

Here's an excerpt from his Suite for Piano, Op. 13: Pastorale

5. Viktor Ullmann

ullmann.jpgUllmann kept very busy at Terezín. Besides composing and accompanying, he also penned critiques of some of the musical events that Klein and others put on. In 1944 he was deported Birkenau at Auschwitz, where he was killed in the gas chambers. Here's an excerpt from his String Quartet, Op. 46

FYI: Many more composers were killed during the war and even more blacklisted. This list is only a partial representation.
Check out past On Music posts here >>

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Opening Ceremony
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These $425 Jeans Can Turn Into Jorts
May 19, 2017
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Opening Ceremony

Modular clothing used to consist of something simple, like a reversible jacket. Today, it’s a $425 pair of detachable jeans.

Apparel retailer Opening Ceremony recently debuted a pair of “2 in 1 Y/Project” trousers that look fairly peculiar. The legs are held to the crotch by a pair of loops, creating a disjointed C-3PO effect. Undo the loops and you can now remove the legs entirely, leaving a pair of jean shorts in their wake. The result goes from this:

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Opening Ceremony

To this:

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Opening Ceremony

The company also offers a slightly different cut with button tabs in black for $460. If these aren’t audacious enough for you, the Y/Project line includes jumpsuits with removable legs and garter-equipped jeans.

[h/t Mashable]

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