======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '281'
                                          'artist'  'Serj Tankian'
                                     'text_people'  ''
                                         'release'  'Imperfect Harmonies'
                                           'title'  'Beatus'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'alternative metal', 'alternative', 'metal', 'rock']"
                                     'discogstags'  ("['rock', 'classical', 'folk, world, & country', 'alternative rock', "
 "'experimental']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '119.900'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Imperfect Harmonies'
'TBPM' (BPM (beats per minute))                     '119.900'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Beatus'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Serj Tankian'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock',
 'classical',
 'folk, world, & country',
 'alternative rock',
 'experimental']
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative metal', 'alternative', 'metal', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.63 dB'
'TXXX:replaygain_track_peak'                        '0.415137'

========================== row from database ==========================
                                              'id'  1490312
                                            'path'  /data/Music/Bulk/00poprockelectronic/Serj Tankian/Imperfect Harmonies/04 - Beatus.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  281
                                           'genre'  eid-metal
                                        'filesize'  11250743
                                           'mtime'  1620301791
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 04 eid metal
                                      'tag_artist'  Serj Tankian
                                     'tag_release'  Imperfect Harmonies
                                       'tag_title'  Beatus
                                             'bpm'  119.9
                                    'search_title'  'beatus':1
                                   'search_artist'  'serj':1 'tankian':2
                                  'search_release'  'harmonies':2 'imperfect':1
                                     'search_rest'  '00poprockelectronic':1 'eid':2 'metal':3
                                    'search_combo'  '00poprockelectronic':6 'beatus':1A 'eid':7 'harmonies':5C 'imperfect':4C 'metal':8 'serj':2B 'tankian':3B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'alternative metal', 'alternative', 'metal', 'rock']
                                        'tag_date'  2010
                                     'discogstags'  ['rock', 'classical', 'folk, world, & country', 'alternative rock', 'experimental']

============================== file details ==============================
                                           'mtime'  1620301790.573432  (2021-05-06 13:49:50)
                             'size'  11250743