gistfile1.txt

var chainer = new Sequelize.Utils.QueryChainer()

Artist.find({ where: {name: name} }).success(function(artist) {
    if (artist) {
      // get all tracks
      artist.getTracks().success(function (tracks) {
        if (tracks.length > 0) {
          tracks.forEach(function(track) {
            chainer.add(track.getArtists())
          })

          chainer.run().success(function(artists) {
            for(var i = 0; i < tracks.length; i++) {
              tracks[i].artists = artists[i]
            }

            res.render('artist', { title: artist.name, artist: artist, tracks: tracks });
          })
        } else {
          res.render('artist', { title: artist.name, artist: artist, tracks: tracks });
        }
      });

    } else {
      req.flash('error', 'Artist not found');
      res.redirect('/');
    }
  });