======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '134'
                                          'artist'  'Marais and Miranda'
                                     'text_people'  ''
                                         'release'  'A European Folk Song Festival '
                                           'title'  'Twa Bonnie Maidens'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-OLDST-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['nature', 'science', 'folk', 'eductional', 'educational']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '12'
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk;loc-eur'
                                             'bpm'  '134.6'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'A European Folk Song Festival '
'TBPM' (BPM (beats per minute))                     '134.6'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-folk', 'loc-eur']
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Twa Bonnie Maidens'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Marais and Miranda'
'TRCK' (Track number/Position in set)               '2/12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['nature', 'science', 'folk', 'eductional', 'educational']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.49 dB'
'TXXX:replaygain_track_peak'                        '0.937093'

========================== row from database ==========================
                                              'id'  1368360
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Marais and Miranda/a european folk song festival/02 twa bonnie maidens.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  134
                                           'genre'  ifs-songwriter-folk;loc-eur
                                        'filesize'  2689812
                                           'mtime'  1621630292
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos european folk song festival 02 twa bonnie maidens ifs songwriter folk;loc eur
                                      'tag_artist'  Marais and Miranda
                                     'tag_release'  A European Folk Song Festival 
                                       'tag_title'  Twa Bonnie Maidens
                                             'bpm'  134.6
                                    'search_title'  'bonnie':2 'maidens':3 'twa':1
                                   'search_artist'  'and':2 'marais':1 'miranda':3
                                  'search_release'  'a':1 'european':2 'festival':5 'folk':3 'song':4
                                     'search_rest'  '00singer':1 'bonnie':9 'eos':3 'eur':16 'european':4 'festival':7 'folk':5,12,14 'ifs':11 'loc':13,15 'maidens':10 'song':6 'songwriter':2 'twa':8
                                    'search_combo'  '00singer':12 'a':7C 'and':5B 'bonnie':2A,20 'eos':14 'eur':27 'european':8C,15 'festival':11C,18 'folk':9C,16,23,25 'ifs':22 'loc':24,26 'maidens':3A,21 'marais':4B 'miranda':6B 'song':10C,17 'songwriter':13 'twa':1A,19
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['nature', 'science', 'folk', 'eductional', 'educational']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630292.0598254  (2021-05-21 22:51:32)
                             'size'  2689812