======================== unified (from filesystem) ========================
                                         'bitrate'  '191.021'
                                        'duration'  '378'
                                          'artist'  'Deep Purple'
                                     'text_people'  ''
                                         'release'  'Made in Japan'
                                           'title'  'Black Night'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']"
                                     'discogstags'  "['hard rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '3'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;eid-metal;rock-cppex'
                                             'bpm'  '141'
                                             'key'  '6B'
                                        'acoustid'  '185af3e0-3e6b-4454-8dc7-e64b05fe5135'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Made in Japan'
'TBPM' (BPM (beats per minute))                     '141'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'eid-metal', 'rock-cppex']
'TDOR' (Original release time)                      '1972'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Black Night'
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Deep Purple'
'TPE2' (Band/orchestra/accompaniment)               'Deep Purple'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'EMI'
'TRCK' (Track number/Position in set)               '1/3'
'TSO2'                                              'Deep Purple'
'TSOP' (Performer sort order)                       'Deep Purple'
'TSRC' (ISRC (international standard recording code))  'CHUM71300386'
'TSST' (Set subtitle)                               'The Encores'
'TXXX:ASIN'                                         'B000005RU2'
'TXXX:Acoustid Id'                                  '185af3e0-3e6b-4454-8dc7-e64b05fe5135'
'TXXX:Artists'                                      'Deep Purple'
'TXXX:BARCODE'                                      '724385786426'
'TXXX:CATALOGNUMBER'                                '084 (2)/8 57864 2/857 8642/8 59709 2/8 59710 2'
'TXXX:MusicBrainz Album Artist Id'                  '79491354-3d83-40e3-9d8e-7592d58d790a'
'TXXX:MusicBrainz Album Id'                         '0209bdf3-b68e-43ed-821e-6656ba0b6494'
'TXXX:MusicBrainz Album Release Country'            'FR'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/live'
'TXXX:MusicBrainz Artist Id'                        '79491354-3d83-40e3-9d8e-7592d58d790a'
'TXXX:MusicBrainz Release Group Id'                 'afab893b-4284-37c3-bf74-0139773c8c6d'
'TXXX:MusicBrainz Release Track Id'                 '921e0454-e150-4444-b780-35786084f988'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['hard rock', 'rock']
'TXXX:iTunes_CDDB_IDs'                              '3+967DF0A37CAB29D5714627F6865CEE91+796335'
'TXXX:lastfmtags'                                   ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
'TXXX:originalyear'                                 '1972'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.438021'
'TXXX:tempo'                                        '00000 BPM'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'7c3cd4b7-e2a6-4a20-9aa0-c307afd0c101')

========================== row from database ==========================
                                              'id'  1358816
                                            'path'  /data/Music/Bulk/00poprockelectronic/Deep Purple/In Concert with the London Symphony Orch/01 Black Night  [Live].mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  378
                                           'genre'  rock-cppex-classic;eid-metal;rock-cppex
                                        'filesize'  9080646
                                           'mtime'  1636039165
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic In Concert with the London Symphony Orch 01 [Live] rock cppex classic;eid metal;rock cppex
                                      'tag_artist'  Deep Purple
                                     'tag_release'  Made in Japan
                                       'tag_title'  Black Night
                                             'bpm'  141.0
                                    'search_title'  'black':1 'night':2
                                   'search_artist'  'deep':1 'purple':2
                                  'search_release'  'in':2 'japan':3 'made':1
                                     'search_rest'  '00poprockelectronic':1 'classic':13,15 'concert':3 'cppex':12 'eid':14,16 'in':2 'live':9,10 'london':6 'metal':17,19 'orch':8 'rock':11,18,20 'symphony':7 'the':5 'with':4
                                    'search_combo'  '00poprockelectronic':8 'black':1A 'classic':20,22 'concert':10 'cppex':19 'deep':3B 'eid':21,23 'in':6C,9 'japan':7C 'live':16,17 'london':13 'made':5C 'metal':24,26 'night':2A 'orch':15 'purple':4B 'rock':18,25,27 'symphony':14 'the':12 'with':11
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
                                        'tag_date'  1998
                                     'discogstags'  ['hard rock', 'rock']

============================== file details ==============================
                                           'mtime'  1636039165.1816332  (2021-11-04 16:19:25)
                             'size'  9080646