So, I had a few minutes of free time earlier today, and I decided to play a bit with MusicBrainz. On my Mac right now, the only music I have is tagged by Musicbrainz, and I finally have redlandbot\/julie back online after some extended DSL line problems. <\/p>\n
So, I figured “hey, my music is tagged by musicbrainz, and they do some nifty RDF stuff, right?” So I started exploring. <\/p>\n
I’m listening to Lou Bega’s Mambo #5, from Mastermix 160 (disc 1), according to iTunes. As I said before, all these titles are pulled from MusicBrainz. So, I go to Musicbrainz, and type in “Mastermix 160” to the Albums list, click on the correct response. I arrive at http:\/\/www.musicbrainz.org\/showalbum.html?albumid=145830 , and from there, move on to Mambo #5<\/a>. I’m given two RDF links: One for the Track<\/a>, one for the artist<\/a>.<\/p>\n I add these to my local RDF store via IRC: <\/p>\n 15:43:43 < crschmidt> ^add So, now the bot knows about the song that I’m listening to – how to tell her I’m listening to it? The MeNow schema is designed for just that. A turtle serialization stating “crschmidt, whose homepage is http:\/\/crschmidt.net, is, at time 2005-03-28T20:47Z listening to the track identified by http:\/\/musicbrainz.org\/track\/5c29f67b-5014-40a7-a443-0de7636b26ac” would go something like this:<\/p>\n [a foaf:Person; foaf:nick “crschmidt”; foaf:homepage <http:\/\/crschmidt.net>; menow:hasStatus [ a menow:Status; menow:listeningTo <http:\/\/musicbrainz.org\/track\/5c29f67b-5014-40a7-a443-0de7636b26ac>; dc:date “2005-03-28T20:47Z”]].<\/p>\n Just my luck, my IRC bot also understands Turtle, so I add some triples:<\/p>\n 15:49:07 < crschmidt> ^addturtle [a foaf:Person; foaf:nick “crschmidt”; foaf:homepage <http:\/\/crschmidt.net>; menow:hasStatus [ a menow:Status; menow:listeningTo So, now julie knows what I’m listening to, but how do I tell other people? Using RDQL queries (I haven’t added SPARQL support yet), I can show off what I’m listening to:<\/p>\n 15:53:16 < crschmidt> ^q select ?t, ?n, ?d where (?p foaf:nick “crschmidt”) (?p menow:hasStatus ?s) (?s dc:date ?d) (?s menow:listeningTo ?o) (?o dc:title ?t) (?o dc:creator ?a) (?a dc:title ?n) As you can see, this shows off all the songs I’ve been listening to recently. If I want to limit them, I can add a regex onto ?d: ?d =~ \/20:47\/. This gives me the result I want: 2005-03-28T20:47Z Mambo No. 5 Lou Bega<\/p>\n Okay, so it’s the most ass backwards way of sharing what you’re listening to ever. That doesn’t mean it doesn’t have 0 merit however: one of the benefits of RDF is its extensibility. This means that I can do a lot more than just say what I’m listening to. I could, for example, offer a rating, using the review vocabulary<\/a>. I could find out what license a work is under, using information from the Creative Commons Metadata<\/a> project. I could find out what songs someone else is listening to, and then find out their contact information via FOAF<\/a>, check their availability via MeNow information and Jabber Pub\/Sub tech, and drop them a message if they’re around. <\/p>\n I’m stretching it, but this is why I want all this stuff which MeNow can work with. RDF is powerful, and an application people might actually use would be a cool way to share this data. Then again, for the most part, I’m preaching to the choir here. But I wanted to write about it anyway. “Now Playing information stored in RDF: Wave of the future! You heard it here first!”<\/p>\n","protected":false},"excerpt":{"rendered":" So, I had a few minutes of free time earlier today, and I decided to play a bit with MusicBrainz. On my Mac right now, the only music I have is tagged by Musicbrainz, and I finally have redlandbot\/julie back online after some extended DSL line problems. So, I figured “hey, my music is tagged […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25,8,2],"tags":[],"class_list":["post-47","post","type-post","status-publish","format-standard","hentry","category-menow","category-rdfcat","category-semantic-web"],"_links":{"self":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/posts\/47","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/comments?post=47"}],"version-history":[{"count":0,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/posts\/47\/revisions"}],"wp:attachment":[{"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/media?parent=47"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/categories?post=47"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crschmidt.net\/blog\/wp-json\/wp\/v2\/tags?post=47"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nhttp:\/\/mm.musicbrainz.org\/mm-2.1\/track\/5c29f67b-5014-40a7-a443-0de7636b26ac
\n15:43:44 < julie> Adding
\nhttp:\/\/mm.musicbrainz.org\/mm-2.1\/track\/5c29f67b-5014-40a7-a443-0de7636b26ac to my database…
\n15:43:45 < julie> Added 14 statements from
\nhttp:\/\/mm.musicbrainz.org\/mm-2.1\/track\/5c29f67b-5014-40a7-a443-0de7636b26ac. Model size is 2125954.
\n15:43:51 < crschmidt> ^add
\nhttp:\/\/mm.musicbrainz.org\/mm-2.1\/artist\/64f9c914-74a0-4f6b-8589-6261851b0ab9
\n15:43:52 < julie> Adding
\nhttp:\/\/mm.musicbrainz.org\/mm-2.1\/artist\/64f9c914-74a0-4f6b-8589-6261851b0ab9 to my database…
\n15:43:53 < julie> Added 8 statements from
\nhttp:\/\/mm.musicbrainz.org\/mm-2.1\/artist\/64f9c914-74a0-4f6b-8589-6261851b0ab9. Model size is 2125962.<\/p>\n
\n<http:\/\/musicbrainz.org\/track\/5c29f67b-5014-40a7-a443-0de7636b26ac>; dc:date “2005-03-28T20:47Z”]].
\n15:49:08 < julie> Model size increased by 7 to 2125969 via turtle statements.<\/p>\n
\n15:53:17 < julie> 2005-03-28T20:47Z Mambo No. 5 Lou Bega, 2005-03-28T16:59Z Can’t Get Enough of You Baby Smash Mouth, 2005-03-28T16:39:08Z Electric Sleep (Original Version) sHeavy, 2005-03-28T16:47:08Z Dead Already Thomas Newman<\/p>\n