======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '226'
                                          'artist'  'Nico'
                                     'text_people'  ''
                                         'release'  'Camera Obscura'
                                           'title'  'Camera Obscura'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['alternative', 'female vocalists', 'experimental', 'folk', 'singer "
 "songwriter']")
                                     'discogstags'  "['techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '105.808'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Camera Obscura'
'TBPM' (BPM (beats per minute))                     '105.808'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Camera Obscura'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nico'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['techno', 'electronic']
'TXXX:lastfmtags'                                   ['alternative', 'female vocalists', 'experimental', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.40 dB'
'TXXX:replaygain_track_peak'                        '0.810124'

========================== row from database ==========================
                                              'id'  1299758
                                            'path'  /data/Music/Bulk/00poprockelectronic/Nico/Nico__Camera Obscura__cifs29e1.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  226
                                           'genre'  ifs-songwriter
                                        'filesize'  6340181
                                           'mtime'  1637330755
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Nico__Camera Obscura__cifs29e1 ifs songwriter
                                      'tag_artist'  Nico
                                     'tag_release'  Camera Obscura
                                       'tag_title'  Camera Obscura
                                             'bpm'  105.808
                                    'search_title'  'camera':1 'obscura':2
                                   'search_artist'  'nico':1
                                  'search_release'  'camera':1 'obscura':2
                                     'search_rest'  '00poprockelectronic':1 'camera':3 'cifs29e1':5 'ifs':6 'nico':2 'obscura':4 'songwriter':7
                                    'search_combo'  '00poprockelectronic':6 'camera':1A,4C,8 'cifs29e1':10 'ifs':11 'nico':3B,7 'obscura':2A,5C,9 'songwriter':12
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'female vocalists', 'experimental', 'folk', 'singer songwriter']
                                        'tag_date'  1985
                                     'discogstags'  ['techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1637330754.831856  (2021-11-19 15:05:54)
                             'size'  6340181