Music Haekel Day


Music Hack DayBerlin 2011

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Music Haekel Day Urban Crocheting vs. Music Hacking

What’s this all about?


How does it work?

  • 1

    Find a haekel thing

    You find a tape, either in the real world or in the gallery below.

  • 2

    Scan the QR code

    You scan the QR code with the camera of your smartphone. You can use free apps like Redlaser for iPhone and Android to scan the code. If you haven’t got a camera or a code reader app, just enter the URL printed on the artwork’s label into your smartphone's browser.

  • 3

    Listen to the the tape

    Your browser will open the Soundcloud page with an audio clip from the actual tape used for the piece. Just press the play button. Instant time travel!


What the hell is this?

This project is about creating something interesting out of your old music tapes. Those dusty things in your basement you like too much to throw away but can’t listen to anyway, because you haven't owned a cassette deck in a decade? Right, those.

We decided your old tapes should find a new home in the cloud and in our cities. We digitize audio from the tape and upload it to Soundcloud, create a piece of artwork made from the actual physical tape, place it somewhere in the city and connect the two together with a QR code. The object can be discovered either by chance or by the map on this page, and when found, can immediately be listened to with every html5-capable smartphone.

Tape Gallery


thank you


Johan and Roel! Thanks a lot for this wonderful Hackday! We enjoyed ourselves immensely.


People involved

  • Alex Feyerke
  • Alex Wilde
  • Claudine Braendle
  • Guido Schetters
  • Hannes Kunstreich
  • Jeff Simons
  • Joel Stein
  • Kristina Schneider

Technology used

  • Crocheting needles
  • Club Mate
  • Fritz Kola
  • Github
  • Google Maps
  • HTML5
  • CSS3
  • Nico Hagenburger
  • Soundcloud
  • Textmate