======================== unified (from filesystem) ========================
                                         'bitrate'  '217.303'
                                        'duration'  '399'
                                          'artist'  'Sigur Rós'
                                     'text_people'  ''
                                         'release'  'Pitchfork: The Top 500 Tracks of the 2000s'
                                           'title'  'untitled #1" (a.k.a. Vaka)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-chart-4', "
 "'q-drums-1', 'q-other-4', 'q-vocals-3', 'q-mixbeat-2', 'Q-PIANO-2']")
                                      'lastfmtags'  "['indie', 'alternative', 'icelandic', 'post rock', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '362'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;electronic'
                                             'bpm'  '135.004'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Pitchfork: The Top 500 Tracks of the 2000s'
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'electronic']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'untitled #1" (a.k.a. Vaka)'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Sigur Rós'
'TRCK' (Track number/Position in set)               '362'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'icelandic', 'post rock', 'ambient']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+10.42 dB'
'TXXX:replaygain_track_peak'                        '0.212456'

========================== row from database ==========================
                                              'id'  1341269
                                            'path'  /data/Music/Bulk/00poprockelectronic/VA - Pitchfork - The Top 500 Tracks of the 2000s/362 - Sigur Rós - untitled #1 (a.k.a. Vaka).mp3
                                         'working'  None
                                         'bitrate'  217
                                    'duration_sec'  399
                                           'genre'  electronic-generic or radio-unsorted;electronic
                                        'filesize'  10854378
                                           'mtime'  1636914501
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic VA 362 electronic generic radio unsorted;electronic
                                      'tag_artist'  Sigur Rós
                                     'tag_release'  Pitchfork: The Top 500 Tracks of the 2000s
                                       'tag_title'  untitled #1" (a.k.a. Vaka)
                                             'bpm'  135.004
                                    'search_title'  '1':2,3 'a':4,6 'aka':7 'k':5 'untitled':1 'vaka':8,9
                                   'search_artist'  'ros':2,3 'sigur':1
                                  'search_release'  '2000s':8 '500':5 'of':7 'pitchfork':1,2 'the':3 'top':4 'tracks':6
                                     'search_rest'  '00poprockelectronic':1 '362':3 'electronic':4,8,10 'generic':5 'radio':6 'unsorted':7,9 'va':2
                                    'search_combo'  '00poprockelectronic':21 '1':2A,3A '2000s':20C '362':23 '500':17C 'a':4A,6A 'aka':7A 'electronic':24,28,30 'generic':25 'k':5A 'of':19C 'pitchfork':13C,14C 'radio':26 'ros':11B,12B 'sigur':10B 'the':15C 'top':16C 'tracks':18C 'unsorted':27,29 'untitled':1A 'va':22 'vaka':8A,9A
                                    'tag_tracknum'  362
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'icelandic', 'post rock', 'ambient']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636914500.5807672  (2021-11-14 19:28:20)
                             'size'  10854378