======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '236'
                                          'artist'  'Nine Inch Nails'
                                     'text_people'  ''
                                         'release'  'The Downward Spiral'
                                           'title'  'The Downward Spiral'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial metal', 'rock', 'industrial', 'nin', 'industrial rock']"
                                     'discogstags'  "['electronic', 'rock', 'industrial']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '110.845'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Downward Spiral'
'TBPM' (BPM (beats per minute))                     '110.845'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'The Downward Spiral'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nine Inch Nails'
'TRCK' (Track number/Position in set)               '13'
'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'                                  ['electronic', 'rock', 'industrial']
'TXXX:lastfmtags'                                   ['industrial metal', 'rock', 'industrial', 'nin', 'industrial rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.35 dB'
'TXXX:replaygain_track_peak'                        '0.612920'

========================== row from database ==========================
                                              'id'  1392469
                                            'path'  /data/Music/Bulk/00dwimp/00ebm-industrial-darkwave-goth/Nine Inch Nails/The Downward Spiral/MBZ;#Nine Inch Nails;#The Downward Spiral;#13;#The Downward Spiral.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  236
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  4738451
                                           'mtime'  1620296038
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth MBZ;#Nine Nails;#The Spiral;#13;#The eid ebm or industrial or darkwave
                                      'tag_artist'  Nine Inch Nails
                                     'tag_release'  The Downward Spiral
                                       'tag_title'  The Downward Spiral
                                             'bpm'  110.845
                                    'search_title'  'downward':2 'spiral':3 'the':1
                                   'search_artist'  'inch':2 'nails':3 'nine':1
                                  'search_release'  'downward':2 'spiral':3 'the':1
                                     'search_rest'  '00dwimp':1 '00ebm':2 '13':15,18 'darkwave':4 'ebm':21 'eid':20 'goth':5 'industrial':3 'mbz':6,8 'nails':10,12 'nine':7,9 'or':22 'spiral':14,17 'the':11,13,16,19
                                    'search_combo'  '00dwimp':10 '00ebm':11 '13':24,27 'darkwave':13 'downward':2A,8C 'ebm':30 'eid':29 'goth':14 'inch':5B 'industrial':12 'mbz':15,17 'nails':6B,19,21 'nine':4B,16,18 'or':31 'spiral':3A,9C,23,26 'the':1A,7C,20,22,25,28
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-3', 'q-chart-4', 'q-other-4', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'rock', 'industrial', 'nin', 'industrial rock']
                                        'tag_date'  1994
                                     'discogstags'  ['electronic', 'rock', 'industrial']

============================== file details ==============================
                                           'mtime'  1620296038.3716912  (2021-05-06 12:13:58)
                             'size'  4738451