======================== unified (from filesystem) ========================
                                         'bitrate'  '248.486'
                                        'duration'  '209'
                                          'artist'  'Jeffrey Lewis'
                                     'text_people'  ''
                                         'release'  '12 Crass Songs'
                                           'title'  'Walls'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
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 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'lo fi', 'antifolk', 'anti folk', 'singer songwriter']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '145.6'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     '12 Crass Songs'
'TBPM' (BPM (beats per minute))                     '145.6'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Walls'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Jeffrey Lewis'
'TRCK' (Track number/Position in set)               '12'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'lo fi', 'antifolk', 'anti folk', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-2.43 dB'
'TXXX:replaygain_track_peak'                        '0.462493'

========================== row from database ==========================
                                              'id'  1257935
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Jeffrey Lewis/12 Crass Songs/12 - walls.mp3
                                         'working'  None
                                         'bitrate'  248
                                    'duration_sec'  209
                                           'genre'  ifs-songwriter
                                        'filesize'  6508455
                                           'mtime'  1637249133
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos walls ifs songwriter
                                      'tag_artist'  Jeffrey Lewis
                                     'tag_release'  12 Crass Songs
                                       'tag_title'  Walls
                                             'bpm'  145.6
                                    'search_title'  'walls':1
                                   'search_artist'  'jeffrey':1 'lewis':2
                                  'search_release'  'crass':1 'songs':2
                                     'search_rest'  '00singer':1 'eos':3 'ifs':5 'songwriter':2 'walls':4
                                    'search_combo'  '00singer':6 'crass':4C 'eos':8 'ifs':10 'jeffrey':2B 'lewis':3B 'songs':5C 'songwriter':7 'walls':1A,9
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'lo fi', 'antifolk', 'anti folk', 'singer songwriter']
                                        'tag_date'  2007
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1637249132.53445  (2021-11-18 16:25:32)
                             'size'  6508455