The second annual Sonoj Convention is an event on the 27th and 28th of October 2018 in Cologne, Germany. Admission is free. It's topic is music production with open source software. The Sonoj Convention is a great opportunity to meet like-minded people, maybe even to have engaging discussions!

The Event

You will be able to enjoy demonstrations, talks and workshops about music production through open source software. Hands-on tutorials and workflow presentations can be expected. All presentations and workshops will be held in English.

Every man and woman is welcome, no matter your musical or technological background. Bring your own computer to participate, if you want!

To get an impression of past conventions, please visit our Archive, which also contains music and videos.

October 27th and 28th





photo of unfa

Tobiasz 'unfa' Karoń

Warsaw, Poland

photo of SirRiffsAlot

Leo T. 'SirRiffsAlot' Bazyar

Trondheim, Norway

photo of Bent Bisballe Nyeng

Bent Bisballe Nyeng

Aarhus, Denmark

photo of Martin Butz

Martin Butz

Bremen, Germany

photo of mirabilos


Bonn, Germany

photo of Filipe Coelho

Filipe 'falktx' Coelho


photo of Eamonn Tobin

Eamonn Tobin


Visitor Registration

Entry is free but we only have space for 50 visitors. Register right now and save a seat for yourself with only your name and e-mail address. Your registration is valid for both days. To register please write us to info@sonoj.org or use the form below. Some people also found us over MeetUp and chose to register there. This is an equally valid registration.

You can help with a donation!

The Sonoj Convention is organized by volunteers and generously hosted by the Chaos Computer Club Cologne. To cover the expenses (electricity, internet, insurance, hardware etc.) we depend on your donation. The amount is entirely your choice. Thank you very much!


You can donate cash in Euro during the event.
No fees, low tech.

Bank Transfer

No fees for us; our preferred online method.
  • To Nils Hilbricht / Sonoj Convention
  • IBAN: DE34500105175557832057


We have to pay a fee of 0.35€ + 1.5% donation

Sonoj Schedule

Video Live Stream here: https://streaming.media.ccc.de/sonoj2018

Time Title Speaker
Sat 10:40 - 11:00 Welcome Nils Hilbricht (Sonoj)
Sat 11:00 - 12:00 Switching to a Linux audio system - A pragmatic guide Georg Berger (OSAMC)
Sat 12:10 - 13:10 Plugin Formats: An explanation of various formats and why they exist (and also why they are all shitty) Filipe Coelho
Sat 13:10 - 13:20 Group Photo
Sat 14:10 - 15:10 Drums: A comparative review of different options Eamonn Tobin
Sat 15:20 - 16:20 Composition and Production Workflow using your own Drum Kit with DrumGizmo. Bent Bisballe Nyeng
Sat 16:30 - 17:30 Making Music with Text - Audible Programming with Sonic Pi Martin Butz
Sat 17:40 - 17:55 Open Source Music FM Synthesizer Challenge - Awards Ceremony and Summary Christopher Arndt (OSAMC)
Sat 17:55 - ... Hey, look at this! - Open slot to show something interesting in a few minutes. Short-term participation possible.
Sat Evening and Night Get-together to talk and network. Accompanied by a live DJ set by Louigi Verona.
Time Title Speaker
Sun 10:30 - 12:30 MuseScore Workshop — entering, typesetting and sounding notes mirabilos
Sun 12:40 - 13:40 From Fine to Fantastic - Beyond Static Sound Design Tobiasz 'unfa' Karoń
Sun 13:50 - 14:50 The Realm of Too Many Options - Write, record, mix and actually finish your music. Leo T. 'SirRiffsAlot' Bazyar
Sun 15:00 - 17:00 One Hour Challenge. It's two hours because we listen to the music and vote afterwards. Anyone
Sun 17:00 - 17:10 Farewell


Video Live Stream here: https://streaming.media.ccc.de/sonoj2018

The second annual Sonoj Convention will be held at the Chaos Computer Club Cologne, Heliosstrasse 6a, 50825 Cologne, Germany on the weekend of October 27th/28th 2018.

You can visit, admission free, if you register beforehand on our website. For those who can not make it there will be live video streaming, as well as video recordings provided shortly after the event.

To get an impression of past conventions, please visit our Archive, which also contains music and videos.

The theme of the convention is making music with free and open source software and hardware. That ranges from a single program up to a whole operating system. No matter the technology, the music is always at the center of it. Every talk, demonstration or workshop will be focused on music. To enable this we follow a top-down approach. E.g. we advise our speakers to start with a piece of music and use it as a reference frame for the rest of the talk.

Our presentations and workshops are “hands-on”. They are meant for musicians, composers, broadcasters, etc. who do not need to know anything about messing with the internals of their software. If you just want to record or create nice synthesized or sampled sounds with your computer – the Sonoj Convention is for you! We believe that open source software ultimately helps you to achieve your goals. So bring your computer and join other creators on site!

Everything else will hopefully be answered in our FAQ section below. If you have any questions or comments left please write a mail to info@sonoj.org

Frequently Asked Questions, Rules and Other Topics of Interest



October the 27th (Saturday) and 28th (Sunday) 2018. Program begins at 10:40AM CET.


Chaos Computer Club Cologne - Heliosstrasse 6a 50825 Cologne, Germany
Website of CCCC: https://koeln.ccc.de/
OpenStreetMaps link to the venue: https://osm.org/go/0GC9nD9u_?m=


Organization is led by Nils Hilbricht. The team can be reached by mail: info@sonoj.org

Do I need to register as a visitor?

Yes, you have to. The space is limited to 50 people, so registration is mandatory and can be done per mail with your name to info@sonoj.org or with a form on the main page. If we reach 50 we still accept new ones and create a waiting-list.

How much does it cost to visit the Sonoj Convention?

Admission is free. However, we still have expenses that we would like to cover with your donations. As described above, donations can be made in cash during the event or in advance by internet transfer. Expenditure includes insurance, electricity, water, logistics, etc.

Do I get paid as a speaker?

Sadly not. We don't have a budget to even cover the travel expenses (not for ourselves as well). If you want to hold a presentation we can arrange a place to stay overnight for free though. This will not be a hotel but a private room of a volunteering organizer.

Do I need to register twice as speaker and visitor?

Accepted speakers do not need to register as visitor and are not counted. However, if you did do not worry. Everything is processed by hand anyway and we are able to work with these issues.

Can I cancel my registration?

Yes, please write us a mail to info@sonoj.org so we can notify someone from the waiting-list. Please note that we won't refund any donations made up to this point. Consider it a good deed.

The Venue and Surroundings

The Venue

The Venue is on high ground level. Normal entrance is by stairs but there is a ramp and an elevator meant for delivering goods that can be used for e.g. wheelchairs. Please contact us if you need this as we need to open a lock first.
The venue provides unisex bathrooms but has no dedicated area for small children or a diaper changing table.

Internet Access

The venue provides an open WLAN. Its costs are covered by your donations.


Please no animals except service animals
No smoking inside
The rules of our host Chaos Computer Club Cologne https://koeln.ccc.de/ apply


The venue is located directly near the Train Station "Bahnhof Köln Ehrenfeld" (Wikipedia Link) which is itself quickly and easy to reach from Cologne Central Station or from outside the city.
Also nearby is the subway station "Venloer Strasse".


Parking for cars in the area is generally free of charge. The venue itself has no parking spots of its own. Since Cologne Ehrenfeld is a densely populated area there is no guarantee to get a spot. There are commercial parking garages in the area which you have to research yourself.
If you don't want to try your luck it is advised to use a train station with a huge free parking area like "Koeln-Weiden West" and travel 10 minutes by train and by foot to the venue.


The district Cologne Ehrenfeld is a central district. There are many shops, takeaways, restaurants and convenience stores very near. The adjacent building is a supermarket.
The venue itself provides snacks and drinks to buy. Tap-water is free (the quality of tap water in Cologne is very good and officially recommended to drink). In this case it is convenient and sanitary to bring your own refillable bottle.


The district Cologne Ehrenfeld is a central district. There are many cheap and expensive hotels and a lot of people that offer private rooms and beds in the area. We have no recommendations or sponsored agreements with any of them so please do your own research. The very nearby train and subway station make it possible to widen the search. If you are a speaker we maybe can arrange a private bed for free from a volunteering organizing member.

What should I wear?

There is no dress code. Wear what you want, but check the weather.


What is the meaning of "Sonoj"?

Sonoj is Esperanto and means just "sounds"

Is the Sonoj Convention organized by the Chaos Computer Club (Cologne)?

No, it is an independent event. The club provides the rooms.

Can I use the logo to write about the Sonoj Convention?

Yes. You can use our images directly as linked-in on your own site or download/reupload it yourself.
You can scale it, change the color or file format
The logo is not under a permissive license and can only be used in a press or documentary context. (free of charge, no royalties, no attribution)

Click here to see all logo files and formats.

Event Location

Chaos Computer Club Cologne
Heliosstrasse 6a
Ground Floor
50825 Cologne, Germany
Email: info@sonoj.org