France meets Germany: Le Blockathon de la Musique

ThoughtWorks Cologne, Lichtstraße 43I, Köln
From Apr 29th 2019
To May 1st 2019
by Board of Music
Develop kick-ass solutions that merge both creative worlds: music & coding.
See the website


The French-German Blockathon is the opener for c/o pop convention. We invite coders and musicians France and Germany to join and collaborate. Your ideas in the music and tech space can spark a revolution in rethinking music! Consider all challenges as suggestions for you. They are the starters for you to develop your ideas.

Go to our website to find all descriptions in Français, German, and English.


Do you have the answer? Check out the challenges and formulate your solutions.
Correcting Metadata
Find an automated way to correct existing metadata, e.g. by comparing it with other metadata or sources. Examples for a manual method are Wikis or a platform like Discogs ( Users compare registered data with those from their sources - in the case of Discogs with the information from their collection CDs, vinyl records or cassettes. Result: Program / Algorithm / Tool / App
Design of a multidimensional metadata model
What can a multi-layered metadata model look like that specifies how reliable all data is? It is necessary to determine the reliability of all verifying third parties to assess the credibility of data. A reliability factor for data could be calculated from this and from possibly influencing factors (e.g. the setting of a studio recording vs a jam session). Result: Concept, implemented as programmed (clickable) or graphic dummies (fake screenshots if useful)
Generation of descriptive texts
Create a tool to create lyrics that describe songs based on their metadata and the audio file. The text should be usable for press purposes (EPKs), social media and similar purposes. Result: Program / Algorithm / Tool / App
Recognition of used sounds and moods
Create a tool to automatically recognise and describe the sounds and moods used in the song. The tool can be used, for example, for syncing or to program external devices (synthesizers, FX, plug-ins) based on the results. Result: Program / Algorithm / Tool / App
Identify suitable cover images
Compare songs and their data with pictures and graphics and find suitable material for the design of the cover illustration. It doesn't have to be actual pictures; it can also be the style. Result: Program / Algorithm / Tool / App
Branding through songs
Compare songs and their data with brands: Which songs fit a brand? The image of the brand, the corporate design or the product, for example, can serve as a basis. Result: Program / Algorithm / Tool / App
Matching Music and Video
Develop an algorithm that identifies music that matches given movies or video clips (or vice versa). In addition to standard metadata of music and film, an analysis of the audio or video films is helpful (e.g. editing speed, editing type, changes in volume, image colour, brightness and contrast). Result: Program / Algorithm / Tool / App
Automatic music-to-film editing
Develop a tool for automatic editing of music for a video. The identification of a suitable song is part of Challenge (7). Result: Program / Algorithm / Tool / App
Concept of an improved metadata workflow
Design the concept of a cross-company workflow that eliminates duplicate metadata and minimises errors. It makes sense to limit yourself to a part of the life cycle of a song, e.g. composition to release. The restriction simplifies the detailed design. Result: Concept, implemented as programmed (clickable) or graphic dummies (fake screenshots if useful)
Concept for supported ingest and motivation during metadata entry
The metadata chain begins with composers, musicians and studio personnel. How can metadata entry be simplified and automated for them and others involved in the production process? How can they be motivated to enter data? Please consider GDPR and the avoidance of a monitoring effect. Result: Concept, implemented as programmed (clickable) or graphic dummies (fake screenshots if useful)
Business models for musicians and other creative people
How can a musician monetise data sharing and develop it into another source of revenue? Creative Passport ( is just one approach - what’s beyond? Metadata can change access to music through blockchain-based apps or APIs and UX design, and new revenue options open up. Result: Business model, based on questionnaire.
Improving User Experience with Streaming
How can you improve your streaming experience? With better use of metadata? Alternatively, through changed search and recommendation algorithms? What opportunities do you see? Result: Program / Algorithm / Tool / App; alternatively, a concept, implemented as programmed (clickable) or graphic dummies (fake screenshots if useful).

Prizes pool

Got your eye on the prize? See what's in-store for the hackathon winners below.
Gold Award: 1.000 €
Silver Award: Gadgets
Hottest & New: Gift cards
Special Prize


Wondering what kind of hackers are needed to take on the challenges? Find them here.
Back, Front, or Full stack - you turn concepts into reality using sharp coding skills while listening to a hot playlist.
With your deep scientific background, you are able to design and build complicated machines and systems to drive a technical project.
Idea generator
You spark creation with your original ideas and understand the problem at hand.
Data Scientist
You and data, it's a long story. A virtuoso that works magic with databases and adds a sprinkle of AI.
In your skillful hands, dashboards and applications gain clarity and style.


Get a leg up on the competition by getting familiar with the hackathon resources at your disposal.
AudioKit Pro
sounds, loops & fx
BBC Sound Effects
sounds, fx
Free Music Archive
free music
Free Music Archive (API)
metadata, api
Music Machinery
list of various apis
Programmable Web
list of various apis
list of various apis


The judges are here to evaluate the projects during the hackathon.
Mentor: Stephan Benn
Assessor @ Kanzlei Fleischer
Head of Administration @ GLORIA Theater / (Photo: © Fabian Stuertz)
Mentor: Marie Gauthier
Software Developer @ MOD Devices
CTO @ Resonate (Photo: © Marie Gauthier)
Mentor: Matthias Hornschuh
GEMA Board Member
independent Composer, Speaker (Photo: © Sebastian Linder)
Mentor: Wolfgang Senges
Co-Founder German Blockchain & Metadata Workgroup for Music
MusicTech Advisor (Photo: © Barbara Senges)
Mentor: Bosco Bellinghausen
CEO & Founder
ALISSIA MUSIC (Photo: © Attila Bernhard)
Mentor: Martin Wisniowski
Independent Musician & Media-Artist
Full Stack Developer @ Railslove (Photo: © Martin Wisniowski)
Mentor: Fabian Beiner
COO (Photo: ©
Mentor: Anselm Kreuzer
Composer & Label Owner
Mentor & Jury: Xavier Costaz
Director Innovations and Partnerships
SACEM (Photo: © Serge Loyauté-Peduzzi)
Jury: Claudia Jericho
Leiterin Geschäftsstelle
CREATIVE.NRW (Photo: © Markus Milde)
Jury: Becky Brook
Commercial Lead
JAAK (Photo: © JAAK)
ThoughtWorks Cologne
29 April 2019 - 1 May 2019
Lichtstraße 43I


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Logo of Ministerium für Wirtschaft, Innovation, Digitalisierung und Energie des Landes Nordrhein- Westfalen


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