======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '190'
                                          'artist'  'Carpenters'
                                     'text_people'  ''
                                         'release'  'kerst'
                                           'title'  'O Holy Night'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-vocals-3', 'q-mixbeat-1', "
 "'Q-PIANO-3']")
                                      'lastfmtags'  "['oldies', 'female vocalists', 'pop', 'easy listening', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'rock-unsorted;set-th-christmas'
                                             'bpm'  '135.004'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'kerst'
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 ['rock-unsorted', 'set-th-christmas']
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'O Holy Night'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '190014'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Carpenters'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'female vocalists', 'pop', 'easy listening', '70s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.58 dB'
'TXXX:replaygain_track_peak'                        '0.879653'

========================== row from database ==========================
                                              'id'  1491332
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/Carpenters/Carpenters - O Holy Night.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  190
                                           'genre'  rock-unsorted;set-th-christmas
                                        'filesize'  3041152
                                           'mtime'  1678553566
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch rock unsorted;set th christmas
                                      'tag_artist'  Carpenters
                                     'tag_release'  kerst
                                       'tag_title'  O Holy Night
                                             'bpm'  135.004
                                    'search_title'  'holy':2 'night':3 'o':1
                                   'search_artist'  'carpenters':1
                                  'search_release'  'kerst':1
                                     'search_rest'  '00dutch':4 '00mid':1 'christmas':11 'europe':3 'north':2 'rock':5 'set':7,9 'th':10 'unsorted':6,8
                                    'search_combo'  '00dutch':9 '00mid':6 'carpenters':4B 'christmas':16 'europe':8 'holy':2A 'kerst':5C 'night':3A 'north':7 'o':1A 'rock':10 'set':12,14 'th':15 'unsorted':11,13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-4', 'q-drums-1', 'q-other-3', 'q-vocals-3', 'q-mixbeat-1', 'Q-PIANO-3']
                                      'lastfmtags'  ['oldies', 'female vocalists', 'pop', 'easy listening', '70s']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678553565.7464976  (2023-03-11 17:52:45)
                             'size'  3041152