def post(self):
        artist_id = request.form.get('artist', None)

        try:
            a = api.Artist.get(tag=artist_id)
        except:
            meta = Archive.item_metadata(artist_id)
            name = meta['metadata']['title']
            a = api.Artist(name=name, tag=artist_id)
            a.create()

        results = []
        cids = [c['identifier'] for c in a.get_concerts()]

        for cid in cids:
            try:
                c = api.Concert.get(tag=cid)
            except:
                c = api.Concert(tag=cid, artist_id=a.id)            
                c.create()
            c.register_tracks()

        return a.dict()
 def get_metadata(self):
     return Archive.get_metadata(self.tag)