text: -- schema_16 recreated tracks but forgot to recreate all the indicies
  
  CREATE INDEX trackTitleIndex ON tracks (title);
  CREATE INDEX trackAlbumIndex ON tracks (album);
  CREATE INDEX ctSortIndex ON tracks (content_type);
  CREATE INDEX trackSortIndex ON tracks (titlesort);
  CREATE INDEX trackSearchIndex ON tracks (titlesearch);
  CREATE INDEX trackCustomSearchIndex ON tracks (customsearch);
  CREATE INDEX trackBitrateIndex ON tracks (bitrate);
  CREATE INDEX trackDiscIndex ON tracks (disc);
  CREATE INDEX trackFilesizeIndex ON tracks (filesize);
  CREATE INDEX trackTimestampIndex ON tracks (timestamp);
  CREATE INDEX trackTracknumIndex ON tracks (tracknum);
  CREATE INDEX trackAudioIndex ON tracks (audio);
  CREATE INDEX trackLyricsIndex ON tracks (lyrics);
  CREATE INDEX trackRemoteIndex ON tracks (remote);
  CREATE INDEX trackLosslessIndex ON tracks (lossless);
  CREATE INDEX urlIndex ON tracks (url);
  CREATE INDEX trackExtId ON tracks (extid);
  CREATE INDEX urlmd5Index ON tracks (urlmd5);
  CREATE INDEX coveridIndex ON tracks (coverid);
  