======================== unified (from filesystem) ========================
                                         'bitrate'  '217.901'
                                        'duration'  '531'
                                          'artist'  'Epsilon Minus'
                                     'text_people'  ''
                                         'release'  'Reinitialized (bonus disc)'
                                           'title'  'The Road To Hell (Null Device Remix)'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['industrial', 'ebm', 'synthpop', 'electronic', 'futurepop']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave-futurepop'
                                             'bpm'  '96.668'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Reinitialized (bonus disc)'
'TBPM' (BPM (beats per minute))                     '96.668'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave-futurepop'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'The Road To Hell (Null Device Remix)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Epsilon Minus'
'TRCK' (Track number/Position in set)               '3'
'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'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.86 dB'
'TXXX:replaygain_track_peak'                        '0.485686'

========================== row from database ==========================
                                              'id'  1401083
                                            '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) - 03 - The Road to Hell (Null Device remix).mp3
                                         'working'  None
                                         'bitrate'  217
                                    'duration_sec'  531
                                           'genre'  eid-ebm or industrial or darkwave-futurepop
                                        'filesize'  14498839
                                           'mtime'  1620296602
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth older Epsilon_Minus 2CD Limited_Edition 2004 FWYH 03 to remix) eid ebm or industrial or darkwave futurepop
                                      'tag_artist'  Epsilon Minus
                                     'tag_release'  Reinitialized (bonus disc)
                                       'tag_title'  The Road To Hell (Null Device Remix)
                                             'bpm'  96.668
                                    'search_title'  'device':7 'hell':4 'null':5,6 'remix':8,9 'road':2 'the':1 'to':3
                                   '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 'darkwave':4 'ebm':18 'edition':11 'eid':17 'epsilon':7 'futurepop':20 'fwyh':13 'goth':5 'industrial':3 'limited':10 'minus':8 'older':6 'or':19 'remix':15,16 'to':14
                                    'search_combo'  '00dwimp':17 '00ebm':18 '2004':28 '2cd':25 'bonus':13C,14C 'darkwave':20 'device':7A 'disc':15C,16C 'ebm':34 'edition':27 'eid':33 'epsilon':10B,23 'futurepop':36 'fwyh':29 'goth':21 'hell':4A 'industrial':19 'limited':26 'minus':11B,24 'null':5A,6A 'older':22 'or':35 'reinitialized':12C 'remix':8A,9A,31,32 'road':2A 'the':1A 'to':3A,30
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'Q-HAP-1', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'ebm', 'synthpop', 'electronic', 'futurepop']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620296602.46071  (2021-05-06 12:23:22)
                             'size'  14498839