======================== unified (from filesystem) ========================
                                         'bitrate'  '262.607'
                                        'duration'  '256'
                                          'artist'  'Arch Enemy'
                                     'text_people'  'Christopher Amott/Daniel Erlandsson/Michael Amott'
                                         'release'  'Doomsday Machine'
                                           'title'  'Machtkampf'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['swedish', 'metal', 'melodic death metal', 'death metal', 'female fronted "
 "metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal-death;eid-metal-melodic'
                                             'bpm'  '123.032'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Doomsday Machine'
'TBPM' (BPM (beats per minute))                     '123.032'
'TCOM' (Composer)                                   'Christopher Amott/Daniel Erlandsson/Michael Amott'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal-death', 'eid-metal-melodic']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Machtkampf'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Arch Enemy'
'TPE2' (Band/orchestra/accompaniment)               'Arch Enemy'
'TPUB' (Publisher)                                  'Century Media'
'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'                                   ['swedish',
 'metal',
 'melodic death metal',
 'death metal',
 'female fronted metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.12 dB'
'TXXX:replaygain_track_peak'                        '0.337672'

========================== row from database ==========================
                                              'id'  1286609
                                            'path'  /data/Music/Bulk/00poprockelectronic/Arch Enemy/2005 - Doomsday Machine [--aps]/10- Arch Enemy - Machtkampf.mp3
                                         'working'  None
                                         'bitrate'  262
                                    'duration_sec'  256
                                           'genre'  eid-metal-death;eid-metal-melodic
                                        'filesize'  8419583
                                           'mtime'  1620302144
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2005 [ aps] 10 eid metal death;eid metal melodic
                                      'tag_artist'  Arch Enemy
                                     'tag_release'  Doomsday Machine
                                       'tag_title'  Machtkampf
                                             'bpm'  123.032
                                    'search_title'  'machtkampf':1
                                   'search_artist'  'arch':1 'enemy':2
                                  'search_release'  'doomsday':1 'machine':2
                                     'search_rest'  '00poprockelectronic':1 '2005':2 'aps':3,4 'death':7,9 'eid':5,8,10 'melodic':11 'metal':6
                                    'search_combo'  '00poprockelectronic':6 '2005':7 'aps':8,9 'arch':2B 'death':12,14 'doomsday':4C 'eid':10,13,15 'enemy':3B 'machine':5C 'machtkampf':1A 'melodic':16 'metal':11
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'metal', 'melodic death metal', 'death metal', 'female fronted metal']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302144.249323  (2021-05-06 13:55:44)
                             'size'  8419583