protected Release ReadRelease(XmlReader reader)
        {
            reader.AssertElementStart(Keys.Release);

            Release release = new Release();
            release.JoinedAlbumArtists = reader.GetAttributeOrNull(Keys.JoinedAlbumArtists);
            release.Title = reader.GetAttributeOrNull(Keys.Title);
            release.ReleaseDate = ReleaseDate.Parse(reader.GetAttributeOrNull(Keys.ReleaseDate));
            release.OriginalReleaseDate = ReleaseDate.Parse(reader.GetAttributeOrNull(Keys.OriginalReleaseDate));
            release.CatalogNumber = reader.GetAttributeOrNull(Keys.CatalogNumber);
            release.Label = reader.GetAttributeOrNull(Keys.Label);
            release.Country = reader.GetAttributeOrNull(Keys.Country);
            release.FlagMessage = reader.GetAttributeOrNull(Keys.FlagMessage);
            release.IsFlagged = release.FlagMessage != null;
            release.Notes = reader.GetAttributeOrNull(Keys.Notes);
            release.WikipediaPageName = reader.GetAttributeOrNull(Keys.WikipediaPageName);

            release.DiscogsReleaseId = reader.GetAttributeInt32(Keys.DiscogsReleaseId, 0);
            release.DiscogsMasterId = reader.GetAttributeInt32(Keys.DiscogsMasterId, 0);
            release.Genre = reader.GetAttributeOrNull(Keys.Genre);
            release.Score = reader.GetAttributeInt32(Keys.Score, 0);
            release.DynamicRange = reader.GetAttributeDouble(Keys.DynamicRange, double.NaN);
            release.ReplayGainAlbumGain = reader.GetAttributeDouble(Keys.AlbumGain, double.NaN);
            release.ReplayGainAlbumPeak = reader.GetAttributeDouble(Keys.AlbumPeak, double.NaN);

            if (reader.GetAttributeOrNull(Keys.DateAdded) != null)
            {
                release.DateAdded = new DateTime(reader.GetAttributeInt64(Keys.DateAdded, 0));
            }
            if (reader.GetAttributeOrNull(Keys.DateAudioModified) != null)
            {
                release.DateAudioModified = new DateTime(reader.GetAttributeInt64(Keys.DateAudioModified, 0));
            }
            if (reader.GetAttributeOrNull(Keys.DateModified) != null)
            {
                release.DateModified = new DateTime(reader.GetAttributeInt64(Keys.DateModified, 0));
            }

            if (reader.IsEmptyElement)
            {
                throw new FormatException(InvalidXmlDatabase);
            }

            while (reader.Read())
            {
                if (reader.IsElementEnd(Keys.Release))
                {
                    break;
                }

                if (reader.IsElementStart(Keys.Artists))
                {
                    this.ReadArtists(reader, release);
                }
                else if (reader.IsElementStart(Keys.Tracks))
                {
                    this.ReadTracks(reader, release);
                }
                else if (reader.IsElementStart(Keys.Images))
                {
                    this.ReadImages(reader, release);
                }
                else if (reader.IsElementStart(Keys.AdditionalFiles))
                {
                    this.ReadAdditionalFiles(reader, release);
                }
            }

            return release;
        }