======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '107'
                                          'artist'  'Morella'
                                     'text_people'  ''
                                         'release'  'Morella [csr063]'
                                           'title'  'Fire of Quarrels'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['test', 'post rock', 'post metal', 'ambient']"
                                     'discogstags'  "['rock', 'goth rock', 'avantgarde', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'rock-post'
                                             'bpm'  '135.8'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Morella [csr063]'
'TBPM' (BPM (beats per minute))                     '135.8'
'TCON' (Content type, a.k.a. Genre)                 'rock-post'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Fire of Quarrels'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Morella'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'goth rock', 'avantgarde', 'heavy metal']
'TXXX:lastfmtags'                                   ['test', 'post rock', 'post metal', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.29 dB'
'TXXX:replaygain_track_peak'                        '0.532384'

========================== row from database ==========================
                                              'id'  725005
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Comfort Stand/csr063/csr063_morella_4_fire-of-quarrels.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  107
                                           'genre'  rock-post
                                        'filesize'  2590180
                                           'mtime'  1637876256
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Comfort Stand csr063_morella_4_fire quarrels rock post
                                      'tag_artist'  Morella
                                     'tag_release'  Morella [csr063]
                                       'tag_title'  Fire of Quarrels
                                             'bpm'  135.8
                                    'search_title'  'fire':1 'of':2 'quarrels':3
                                   'search_artist'  'morella':1
                                  'search_release'  'csr063':2,3 'morella':1
                                     'search_rest'  '4':5 'comfort':1 'csr063':3 'fire':6 'morella':4 'post':9 'quarrels':7 'rock':8 'stand':2
                                    'search_combo'  '4':12 'comfort':8 'csr063':6C,7C,10 'fire':1A,13 'morella':4B,5C,11 'of':2A 'post':16 'quarrels':3A,14 'rock':15 'stand':9
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['test', 'post rock', 'post metal', 'ambient']
                                        'tag_date'  2005
                                     'discogstags'  ['rock', 'goth rock', 'avantgarde', 'heavy metal']

============================== file details ==============================
                                           'mtime'  1637876256.0044162  (2021-11-25 22:37:36)
                             'size'  2590180