A little script for exporting you iTunes library into an ElasticSearch database with an index named 'itunes' (requires Yosemite). You may then search for all your Beatles songs using the following command: curl --silent -XGET "localhost:9200/itunes/_search?pretty&size=10000" -d '{"query":{"match":{"artist":"beatles"}}}'|jq '[.hits.hits[]._source]'

iTunes2Elastic.js

var app = Application.currentApplication()
app.includeStandardAdditions = true

var itunes = Application("iTunes")

var url = "http://localhost:9200/itunes/track/"

var lib = itunes.sources["Library"]
var tracks = lib.tracks()

for(var i = 0; i < tracks.length; i++) {
    var o = tracks[i]
    var id = o.id()
    var track = {
        artist:o.artist(),
        name:o.name(),
        album:o.album(),
        genre:o.genre()
    }
    // there should be a better way to escape single '
    var json = JSON.stringify(track).replace(/'/g, "")
    // console.log(json)
    app.doShellScript("curl -XPOST " + url + id + " -d '" + json + "'")
}