======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '313'
                                          'artist'  'Dimmu Borgir'
                                     'text_people'  ''
                                         'release'  'Puritanical euphoric misanthropia'
                                           'title'  'The maelstrom Mephisto'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['melodic black metal', 'symphonic black metal', 'black metal', 'metal', "
 "'norwegian']")
                                     'discogstags'  "['black metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '99.322'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:¬6\x00\x00'                      PRIV(owner='AverageLevel', data=b'\xac6\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Puritanical euphoric misanthropia'
'TBPM' (BPM (beats per minute))                     '99.322'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'The maelstrom Mephisto'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dimmu Borgir'
'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'                                  ['black metal', 'rock']
'TXXX:lastfmtags'                                   ['melodic black metal',
 'symphonic black metal',
 'black metal',
 'metal',
 'norwegian']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.81 dB'
'TXXX:replaygain_track_peak'                        '0.397695'

========================== row from database ==========================
                                              'id'  1334503
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/dimmu borgir - the maelstrom mephisto.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  313
                                           'genre'  eid-metal
                                        'filesize'  6274944
                                           'mtime'  1620301850
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] dimmu borgir the mephisto eid metal
                                      'tag_artist'  Dimmu Borgir
                                     'tag_release'  Puritanical euphoric misanthropia
                                       'tag_title'  The maelstrom Mephisto
                                             'bpm'  99.322
                                    'search_title'  'maelstrom':2 'mephisto':3 'the':1
                                   'search_artist'  'borgir':2 'dimmu':1
                                  'search_release'  'euphoric':2 'misanthropia':3 'puritanical':1
                                     'search_rest'  '00poprockelectronic':1 'borgir':8 'dimmu':7 'eid':11 'files':5,6 'loose':3,4 'mephisto':10 'metal':12 'the':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':9 'borgir':5B,16 'dimmu':4B,15 'eid':19 'euphoric':7C 'files':13,14 'loose':11,12 'maelstrom':2A 'mephisto':3A,18 'metal':20 'misanthropia':8C 'puritanical':6C 'the':1A,17 'unsorted':10
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['melodic black metal', 'symphonic black metal', 'black metal', 'metal', 'norwegian']
                                        'tag_date'  2000
                                     'discogstags'  ['black metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620301849.9555845  (2021-05-06 13:50:49)
                             'size'  6274944