======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '160'
                                          'artist'  'ChthoniC'
                                     'text_people'  ''
                                         'release'  'A Decade on the Throne Live'
                                           'title'  'Grievance, Acheron Poem'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['black metal', 'melodic black metal', 'symphonic black metal', 'taiwanese', "
 "'metal']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '11'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '136.1'
                                             'key'  '6A'
                                        'acoustid'  '004da980-944b-4fe3-a6ba-9478032edf29'
rest: ''

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

'COMM::eng'                                         'grmg'
'TALB' (Album/Movie/Show title)                     'A Decade on the Throne Live'
'TBPM' (BPM (beats per minute))                     '136.1'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '2007-06-26'
'TIT2' (Title/songname/content description)         'Grievance, Acheron Poem'
'TKEY' (Initial key)                                '6A'
'TLAN' (Language(s))                                'English'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'ChthoniC'
'TPE2' (Band/orchestra/accompaniment)               'ChthoniC'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '7/11'
'TSO2'                                              'ChthoniC'
'TSOP' (Performer sort order)                       'ChthoniC'
'TXXX:Acoustid Id'                                  '004da980-944b-4fe3-a6ba-9478032edf29'
'TXXX:MusicBrainz Album Artist Id'                  '81a344e9-a8b1-49a6-80b2-2b03d8a25650'
'TXXX:MusicBrainz Album Id'                         '8f83f93e-0db0-4406-867e-df29c04dceb7'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'live'
'TXXX:MusicBrainz Artist Id'                        '81a344e9-a8b1-49a6-80b2-2b03d8a25650'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['black metal',
 'melodic black metal',
 'symphonic black metal',
 'taiwanese',
 'metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.08 dB'
'TXXX:replaygain_track_peak'                        '0.313305'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'219a203e-43d5-4467-b44e-2ac2ee99327e')

========================== row from database ==========================
                                              'id'  1395735
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Chthonic-A_Decade_on_the_Throne-2CD-Live-2007-GRM/207-chthonic-grievance_acheron_poem.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  160
                                           'genre'  eid-metal-black
                                        'filesize'  6429172
                                           'mtime'  1620301515
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Chthonic A_Decade_on_the_Throne 2CD 2007 GRM 207 chthonic grievance_acheron_poem eid metal black
                                      'tag_artist'  ChthoniC
                                     'tag_release'  A Decade on the Throne Live
                                       'tag_title'  Grievance, Acheron Poem
                                             'bpm'  136.1
                                    'search_title'  'acheron':3 'grievance':1,2 'poem':4
                                   'search_artist'  'c':3 'chthoni':2 'chthonic':1
                                  'search_release'  'a':1 'decade':2 'live':6 'on':3 'the':4 'throne':5
                                     'search_rest'  '00dwimp':1 '00metal':2 '2007':10 '207':12 '2cd':9 'a':4 'acheron':14 'black':18 'chthonic':3 'decade':5 'eid':16 'grievance':13 'grm':11 'metal':17 'on':6 'poem':15 'the':7 'throne':8
                                    'search_combo'  '00dwimp':14 '00metal':15 '2007':23 '207':25 '2cd':22 'a':8C,17 'acheron':3A,27 'black':31 'c':7B 'chthoni':6B 'chthonic':5B,16 'decade':9C,18 'eid':29 'grievance':1A,2A,26 'grm':24 'live':13C 'metal':30 'on':10C,19 'poem':4A,28 'the':11C,20 'throne':12C,21
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'Q-PLAY-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['black metal', 'melodic black metal', 'symphonic black metal', 'taiwanese', 'metal']
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620301515.1527576  (2021-05-06 13:45:15)
                             'size'  6429172