======================== unified (from filesystem) ========================
                                         'bitrate'  '182.793'
                                        'duration'  '215'
                                          'artist'  'Heaven Shall Burn'
                                     'text_people'  'Maik ?'
                                         'release'  'In Battle There Is No Law'
                                           'title'  "An Ethic [Demo '97]"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['metal', 'death metal', 'metalcore', 'hardcore', 'melodic death metal', "
 "'deathcore']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-metal-death;eid-metal-melodic'
                                             'bpm'  '110'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'In Battle There Is No Law'
'TBPM' (BPM (beats per minute))                     '110'
'TCOM' (Composer)                                   'Maik ?'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal-death', 'eid-metal-melodic']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         "An Ethic [Demo '97]"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Heaven Shall Burn'
'TPE2' (Band/orchestra/accompaniment)               'Heaven Shall Burn'
'TPUB' (Publisher)                                  'Lifeforce'
'TRCK' (Track number/Position in set)               '10'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['metal',
 'death metal',
 'metalcore',
 'hardcore',
 'melodic death metal',
 'deathcore']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.54 dB'
'TXXX:replaygain_track_peak'                        '0.538719'

========================== row from database ==========================
                                              'id'  1509767
                                            'path'  /data/Music/Bulk/00poprockelectronic/Heaven Shall Burn/In Battle There Is No Law/Heaven Shall Burn-An Ethic [Demo _97].mp3
                                         'working'  None
                                         'bitrate'  182
                                    'duration_sec'  215
                                           'genre'  eid-metal-death;eid-metal-melodic
                                        'filesize'  4927443
                                           'mtime'  1620302156
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _97] eid metal death;eid metal melodic
                                      'tag_artist'  Heaven Shall Burn
                                     'tag_release'  In Battle There Is No Law
                                       'tag_title'  An Ethic [Demo '97]
                                             'bpm'  110.0
                                    'search_title'  '97':5,6 'an':1 'demo':3,4 'ethic':2
                                   'search_artist'  'burn':3 'heaven':1 'shall':2
                                  'search_release'  'battle':2 'in':1 'is':4 'law':6 'no':5 'there':3
                                     'search_rest'  '00poprockelectronic':1 '97':2,3 'death':6,8 'eid':4,7,9 'melodic':10 'metal':5
                                    'search_combo'  '00poprockelectronic':16 '97':5A,6A,17,18 'an':1A 'battle':11C 'burn':9B 'death':21,23 'demo':3A,4A 'eid':19,22,24 'ethic':2A 'heaven':7B 'in':10C 'is':13C 'law':15C 'melodic':25 'metal':20 'no':14C 'shall':8B 'there':12C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['metal', 'death metal', 'metalcore', 'hardcore', 'melodic death metal', 'deathcore']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302155.8686936  (2021-05-06 13:55:55)
                             'size'  4927443