module.exports = (sequelize, DataTypes) => {
  var Song = sequelize.define('Song', {
    title: DataTypes.STRING,
  });

  Song.associate = function (models) {
    models.Song.belongsToMany(models.Artist, { through: "SongArtists" });
    models.Song.belongsToMany(models.Album, { through: "SongAlbums" });
  };

  return Song;
};