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<h1 style="font-size: 250%;">DBTune.org</h1>

<div id="tagline">DBTune - <i>Serving music-related RDF since 2007</i></div>

<p>
<a href="http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData"><img border="0" alt="Linking Open Data" src="lod.jpg" /></a>


<a href="http://www.elec.qmul.ac.uk/digitalmusic/"><img border="0" alt="Centre for Digital Music, Queen Mary, University of London" src="c4dm.png"/></a>
</p>


<h2><a name="disc" id="disc"></a>0. Disclaimer</h2>
<p>
This is a non-commercial site. The information contained in this site has been collected from several
sources and its accuracy cannot be guaranteed.
No copyright has been intentionally
violated. If you feel a copyright has been violated please contact <a href="#contact">me</a> immediately and the material will be removed
</p>

<h2><a name="intro" id="intro"></a>1. Introduction</h2>

<p>
<a href="http://dbtune.org/">DBTune</a> hosts a number of servers, providing access to
music-related structured data, in a <a href="http://linkeddata.org/">Linked Data</a> fashion. <!-- No longer true (most of this was MySpace): It now provides access to more than <a href="http://blog.dbtune.org/post/2008/04/02/DBTune-is-providing-131-billion-triples">14 billion RDF triples</a>. -->
All the services hosted here are based on open Web standards such as <a href="http://www.w3.org/RDF/">RDF</a>
and <a href="http://www.w3.org/TR/rdf-sparql-query/">SPARQL</a>.
</p>
<p>
This effort is part of the <a href="http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData">Linking
Open Data on the Semantic Web</a> community project, hosted by the <a href="http://www.w3.org/2001/sw/sweo/">Semantic
Web Education and Outreach</a> interest group.
</p>
<p><em>November 2017 update:</em> This server has recently been revived at the Centre for Digital Music following a period of downtime. Many of the datasets have been restored, mostly using a default ClioPatria server viewing static data (i.e. datasets that were originally dynamic are now old static snapshots). Some datasets have been officially retired. More details are below.</p>
<p>
<!--<b>
Please do get the <a href="http://dig.csail.mit.edu/2007/tab/">Tabulator Firefox Extension</a>.
</b>
Indeed, I removed the default redirection towards external RDF visualisation services, so all DBTune URIs will look much better
if you install it.-->
<!-- These are mostly dead...
You can browse DBTune data using any of the following Semantic Web browsers:
<ul>
<li><a href="http://dig.csail.mit.edu/2007/tab/">Tabulator</a></li>
<li><a href="http://demo.openlinksw.com/rdfbrowser2/">OpenLink Data Explorer</a></li>
<li><a href="http://dataviewer.zitgist.com/">Zitgist data viewer</a></li>
<li><a href="http://beckr.org/marbles">Marbles</a></li>
<li><a href="http://www4.wiwiss.fu-berlin.de/rdf_browser/">DISCO</a></li>
</ul>
You can also use the <a href="http://dig.csail.mit.edu/2007/tab/">Tabulator Firefox extension</a> or the <a href="https://addons.mozilla.org/en-US/firefox/addon/8062">OpenLink Data Explorer</a>.
-->
</p>

<h2><a name="concept" id="concept"></a>2. Quick overview of underlying concepts (or the "Semantic Web" in 10 lines... Don't slap me, please)</h2>
<p>
Resources on the Web can be far more than web pages. They can identify anything: <a href="http://moustaki.org/foaf.rdf#moustaki">me</a>,
<a href="http://dbtune.org/jamendo/artist/5">a French band</a>, <a href="http://zitgist.com/music/signal/6da76448-982a-4a01-b65b-9a710301c9c9">an audio
signal</a>, etc.
</p>
<p>
Such resources have associated <i>representations</i> (accessed, in our case, through <a href="http://en.wikipedia.org/wiki/HTTP">HTTP</a>),
which may be either human-readable (an <a href="http://www.w3.org/TR/xhtml1/">XHTML document</a>,
for example) or machine-processable (<a href="http://microformats.org/">Microformats</a> or <a href="http://www.w3.org/RDF/">RDF</a>).
These representations may hold links to further resources, allowing to jump from one resource to another, which may be actually hosted
in different places. This is were the <i>Web</i> aspect comes into place.
</p>
<p>
Let's take an example. The resource <a href="http://dbtune.org/jamendo/artist/5">http://dbtune.org/jamendo/artist/5</a> identifies a French band, called
<i>Both</i>. Asking for a RDF representation of this resource gives us back the following statement:
<pre>
&lt;http://dbtune.org/jamendo/artist/5&gt; &lt;http://xmlns.com/foaf/0.1/based_near&gt; &lt;http://sws.geonames.org/2991627/&gt;
</pre>
We can then follow this <i>link</i> to get to a resource identifying a geographic location, located within the <a href="http://geonames.org/">dataset</a>.
Moreover, this <i>link</i> is also a resource identifier! So if we don't know what it means to be <i>based_near</i> something, we can
still access a representation of it, which would give us statements such as "<i>based_near</i> is a property, and it relates a person or a group
of person to a geographical location".
</p>


<h2><a name="datasets" id="datasets"></a>3. Available datasets</h2>


<p>
The following datasets are available on this server:

<ol>
<li><a href="http://dbtune.org/jamendo/">Jamendo</a>, holding data from the <a href="http://jamendo.org/">Jamendo website</a> (<a href="http://dbtune.org/jamendo/#query">SPARQL end-point</a>
available, as well as browsable URIs, <a href="http://dbtune.org/jamendo/#dump">RDF dump available</a>) ;</li>
<li><a href="http://dbtune.org/magnatune/">Magnatune</a>, holding data from the <a href="http://magnatune.com/">Magnatune label</a> (<a href="http://dbtune.org/magnatune/#query">SPARQL end-point</a>
and browsable URIs, <a href="http://dbtune.org/magnatune/#dump">RDF dump available</a>) ;</li>
<li><a href="http://dbtune.org/bbc/peel/">BBC John Peel sessions</a>, holding <a href="http://bbc-hackday.dyndns.org/">data released during the Hackday, 2007</a> (<a href="http://dbtune.org/bbc/peel/#query">SPARQL end-point</a> and browsable URIs, <a href="http://dbtune.org/bbc/peel/#dump">RDF dump available</a>) ;</li>
<li><a href="http://dbtune.org/cmn/">Classical Music Navigator data</a> adapted from Charles H Smith's CMN site (<a href="http://dbtune.org/cmn/#use">SPARQL end-point</a> and browsable URIs, <a href="http://dbtune.org/cmn/#dump">RDF dump available</a>) ;</li>
<li><a href="http://dbtune.org/classical/">DBTune classical data</a>, a larger and messier dataset adapted from various sources (<a href="http://dbtune.org/classical/#use">SPARQL end-point</a> and browsable URIs, <a href="http://dbtune.org/classical/#dump">RDF dump available</a>) ;</li>
<li><a href="http://purl.org/ontology/chord/#symbolservice">A chord symbol service</a>, holding descriptions of chords, generated on-the-fly (browsable URIs)</a></li>
<li><a href="http://dbtune.org/musicbrainz/">Musicbrainz data</a>, powered by <a href="http://www4.wiwiss.fu-berlin.de/bizer/d2r-server/">D2R server</a> and a <a href="http://motools.svn.sourceforge.net/viewvc/motools/musicbrainz/musicbrainz_mo.n3?view=markup">D2RQ mapping</a>, SPARQL end-point available</li>
<li><a href="http://the.echonest.com/analyze.html">Echonest Analyze</a> XML to Music Ontology RDF <a href="http://dbtune.org/echonest/">transform</a></li>
</ol>
</p>

<h3>3a. Formerly-available datasets</h3>

<p>
The following datasets used to be available on this server but are no
longer provided, in most cases because the third-party APIs backing
them no longer exist. The descriptive pages are retained for
historical interest.

<ol>
<li><a href="http://dbtune.org/last-fm/">AudioScrobbler data</a>, displaying your last 10 played tracks as RDF linked to <a href="http://musicbainz.org/">Musicbrainz</a> dereferencable URIs</li>
<li><a href="http://dbtune.org/myspace/">MySpace data</a>, providing URIs and associated RDF representations for top-friends and available tracks on <a href="http://myspace.com/">MySpace</a></li>
<li><a href="http://dbtune.org/bbc/playcount/">BBC playcount data</a>, linking <a href="http://bbc-programmes.dyndns.org/">The BBC Programmes linked data</a> and <a href="http://dbtune.org/musicbrainz/">the Musicbrainz linked data</a>, SPARQL end-point available</li>
<li><a href="http://dbtune.org/henry/">Henry</a>, a SPARQL end-point interpreting signal processing workflows and providing on-demand content-based data</li>
</ol>

<p>
The datasets originally available on this server, as well as their
interlinks, correspond to the blue circles in the following diagram.
</p>
<p>
<img src="lod.png" alt="Depiction of the different DBTune datasets" width="70%"/>
</p>
<p>
Original diagram from <a href="http://dowhatimean.net/">Richard
Cyganiak</a> under the <a href="http://creativecommons.org/licenses/by-sa/3.0/">CC-BY-SA</a> license.
</p>

<h2><a name="links" id="links"></a>4. Links to external datasets</a></h2>
<p>
The following dataset interlinking have been achieved:

<ol>
<li><a href="http://dbtune.org/jamendo/">Jamendo</a> to <a href="http://zitgist.com/music/">Musicbrainz</a> (using some kind of <a href="http://blog.dbtune.org/post/2007/06/11/Linking-open-data%3A-interlinking-the-Jamendo-and-the-Musicbrainz-datasets">record linkage technique</a>)</li>
<li><a href="http://dbtune.org/jamendo/">Jamendo</a> to <a href="http://geonames.org/">Geonames</a></li>
<li><a href="http://dbtune.org/magnatune/">Magnatune</a> to <a href="http://dbpedia.org/">DBPedia</a></li>
<li><a href="http://dbtune.org/bbc/peel/">John Peel</a> to <a href="http://dbpedia.org/">DBPedia</a></li>
<li><a href="http://dbtune.org/musicbrainz/">Musicbrainz</a> to <a href="http://dbpedia.org/">DBPedia</a>, <a href="http://dbtune.org/myspace/">MySpace</a> and <a href="http://www.lingvoj.org/">Lingvoj</a></li>
<li><a href="http://dbtune.org/bbc/playcount/">BBC playcount data</a> to
<a href="http://bbc-programmes.dyndns.org/">BBC Programmes</a> and <a href="http://dbtune.org/musicbrainz/">Musicbrainz</a></li>
</ol>

</p>


<h2><a name="ack" id="ack"></a>5. Acknowledgements</h2>
<p>
All the things provided by this server relies on the work of many people. Let's try to mention a few:
<ul>
<li>The <a href="http://musicontology.com">Music ontology</a> community</li>
<li><a href="http://sonictruths.net">Christopher Sutton</a>, for taking care of the original server</li>
<li>Everybody in the <a href="http://linkeddata.org">The Linking Open Data on the Semantic Web SWEO project</a></li>
<li>The <a href="http://dbpedia.org/">DBPedia</a> people, for letting me steal their CSS and their db* pattern</li>
<li>The <a href="http://www.bbc.co.uk/radio/">BBC audio and music interactive</a> folks</li>
<li>The <a href="http://jamendo.org/">Jamendo</a> and the <a href="http://magnatune.com">Magnatune</a> teams</li>
<li><a href="http://www.swi-prolog.org/">SWI-Prolog</a> developers, especially <a href="http://www.science.uva.nl/~wielemak/">Jan Wielemaker</a>, for all
his really fast replies to our really annoying emails :-)</li>
<li>The <a href="http://www.okfn.org/">Open Knowledge Foundation</a></li>
<li>And everybody in the <a href="http://www.elec.qmul.ac.uk/digitalmusic/">Centre for Digital Music</a>!</li>
</ul>
</p>

<h2><a name="contact" id="contact"></a>6. Contact</h2>
<ul>
  <li><a href="http://moustaki.org/">Yves Raimond</a></li>
  <li>Server maintenance (2017 iteration): <a href="http://www.eecs.qmul.ac.uk/people/view/3111">Chris Cannam</a><br><a href="http://c4dm.eecs.qmul.ac.uk/">Centre for Digital Music</a>, Queen Mary, University of London</li>
</ul>
</p>
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<a href="http://moustaki.org/foaf.rdf#moustaki"><img alt="FOAF" src="http://moustaki.org/img/foaf.gif" style="border: 0px solid ; width: 62px; height: 22px;"/></a>
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author	Chris Cannam
date	Wed, 08 Nov 2017 15:27:23 +0000
parents	eea58cdb7c08
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