======================== unified (from filesystem) ========================
                                         'bitrate'  '214.522'
                                        'duration'  '203'
                                          'artist'  'Arthur "Big Boy" Crudup'
                                     'text_people'  ''
                                         'release'  'Acoustic Blues'
                                           'title'  'Black Pony Blues'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
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 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  ("['blues', 'delta blues', 'classic blues', 'rhythm and blues', 'arthur big "
 "boy crudup']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '25'
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '89'
                                             'key'  '4B'
                                        'acoustid'  '2e298b77-cb01-483d-960f-b8fb326bd702'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '7310D119+323068+25+150+7938+'
'COMM:iTunes_CDDB_1:eng'                            '7310D119+323068+25+150+7938+19009+32419+47640+60291+72546+86498+97269+109625+124250+137273+149741+162539+176524+190430+204269+218663+231568+244853+261922+272396+284693+297199+309581'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '4'
'TALB' (Album/Movie/Show title)                     'Acoustic Blues'
'TBPM' (BPM (beats per minute))                     '89'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDOR' (Original release time)                      '2012'
'TDRC' (Recording time)                             '2012-09-28'
'TENC' (Encoded by)                                 'dBpoweramp Release 14.2'
'TIT2' (Title/songname/content description)         'Black Pony Blues'
'TKEY' (Initial key)                                '4B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Arthur "Big Boy" Crudup'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Not Now Music'
'TRCK' (Track number/Position in set)               '4/25'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Crudup, Arthur "Big Boy"'
'TXXX:ASIN'                                         'B009HCBDSA'
'TXXX:Acoustid Id'                                  '2e298b77-cb01-483d-960f-b8fb326bd702'
'TXXX:Artists'                                      'Arthur "Big Boy" Crudup'
'TXXX:BARCODE'                                      '5060143494697'
'TXXX:CATALOGNUMBER'                                'NOT2CD469'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '5b09ad00-ebd3-4933-a163-21505f794555'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '8d835405-44cb-49ea-b223-d5f91e109b22'
'TXXX:MusicBrainz Release Group Id'                 'db2d3f7d-4bfc-4dc0-a0e9-6d302551c5f8'
'TXXX:MusicBrainz Release Track Id'                 '10c751b3-2fb6-49aa-9095-309be96c67c0'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['blues',
 'delta blues',
 'classic blues',
 'rhythm and blues',
 'arthur big boy crudup']
'TXXX:originalyear'                                 '2012'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.44 dB'
'TXXX:replaygain_track_peak'                        '0.422937'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'4dc44422-cd43-4687-9867-717029eea8b9')

========================== row from database ==========================
                                              'id'  948652
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/va - Raw Blues Classics Vol. 1/04 - Arthur Big Boy Crudup - Black Poney Blues.mp3
                                         'working'  None
                                         'bitrate'  214
                                    'duration_sec'  203
                                           'genre'  prerock-jb-blues
                                        'filesize'  5534260
                                           'mtime'  1620402851
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country va Raw Classics Vol. 1 04 Poney prerock jb blues
                                      'tag_artist'  Arthur "Big Boy" Crudup
                                     'tag_release'  Acoustic Blues
                                       'tag_title'  Black Pony Blues
                                             'bpm'  89.0
                                    'search_title'  'black':1 'blues':3 'pony':2
                                   'search_artist'  'arthur':1 'big':2 'boy':3 'crudup':4
                                  'search_release'  'acoustic':1 'blues':2
                                     'search_rest'  '1':10 'blues':14 'classics':7 'country':4 'exotica':2 'jazz':1 'jb':13 'oldies':3 'poney':11 'prerock':12 'raw':6 'va':5 'vol':8,9
                                    'search_combo'  '1':19 'acoustic':8C 'arthur':4B 'big':5B 'black':1A 'blues':3A,9C,23 'boy':6B 'classics':16 'country':13 'crudup':7B 'exotica':11 'jazz':10 'jb':22 'oldies':12 'poney':20 'pony':2A 'prerock':21 'raw':15 'va':14 'vol':17,18
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'delta blues', 'classic blues', 'rhythm and blues', 'arthur big boy crudup']
                                        'tag_date'  2012
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402851.303299  (2021-05-07 17:54:11)
                             'size'  5534260