======================== unified (from filesystem) ========================
                                         'bitrate'  '191.67'
                                        'duration'  '293'
                                          'artist'  'Epsilon Minus'
                                     'text_people'  ''
                                         'release'  'Reinitialized (bonus disc)'
                                           'title'  'Forever More (Virulent Club Mix)'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['industrial', 'ebm', 'synthpop', 'electronic', 'futurepop']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave-futurepop'
                                             'bpm'  '140.141'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Reinitialized (bonus disc)'
'TBPM' (BPM (beats per minute))                     '140.141'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave-futurepop'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Forever More (Virulent Club Mix)'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Epsilon Minus'
'TRCK' (Track number/Position in set)               '5'
'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'
'TXXX:lastfmtags'                                   ['industrial', 'ebm', 'synthpop', 'electronic', 'futurepop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.30 dB'
'TXXX:replaygain_track_peak'                        '0.608933'

========================== row from database ==========================
                                              'id'  1402398
                                            'path'  /data/Music/Bulk/00dwimp/00ebm-industrial-darkwave-goth/Epsilon Minus/older/Epsilon_Minus-Reinitialized-2CD-Limited_Edition-2004-FWYH/Epsilon Minus - Reinitialized (bonus disc) - 05 - Forever More (Virulent club mix).mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  293
                                           'genre'  eid-ebm or industrial or darkwave-futurepop
                                        'filesize'  7034752
                                           'mtime'  1620296602
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth older Epsilon_Minus 2CD Limited_Edition 2004 FWYH 05 club mix) eid ebm industrial darkwave futurepop
                                      'tag_artist'  Epsilon Minus
                                     'tag_release'  Reinitialized (bonus disc)
                                       'tag_title'  Forever More (Virulent Club Mix)
                                             'bpm'  140.141
                                    'search_title'  'club':5 'forever':1 'mix':6,7 'more':2 'virulent':3,4
                                   'search_artist'  'epsilon':1 'minus':2
                                  'search_release'  'bonus':2,3 'disc':4,5 'reinitialized':1
                                     'search_rest'  '00dwimp':1 '00ebm':2 '2004':12 '2cd':9 'club':14 'darkwave':4 'ebm':18 'edition':11 'eid':17 'epsilon':7 'futurepop':19 'fwyh':13 'goth':5 'industrial':3 'limited':10 'minus':8 'mix':15,16 'older':6
                                    'search_combo'  '00dwimp':15 '00ebm':16 '2004':26 '2cd':23 'bonus':11C,12C 'club':5A,28 'darkwave':18 'disc':13C,14C 'ebm':32 'edition':25 'eid':31 'epsilon':8B,21 'forever':1A 'futurepop':33 'fwyh':27 'goth':19 'industrial':17 'limited':24 'minus':9B,22 'mix':6A,7A,29,30 'more':2A 'older':20 'reinitialized':10C 'virulent':3A,4A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-1', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'ebm', 'synthpop', 'electronic', 'futurepop']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620296602.470318  (2021-05-06 12:23:22)
                             'size'  7034752