======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '183'
                                          'artist'  'Skip James'
                                     'text_people'  ''
                                         'release'  'The Complete Early Recordings'
                                           'title'  'What Am I to Do Blues'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
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 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
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                                      'lastfmtags'  "['guitar', 'blues', 'delta blues', 'folk', 'classic blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  '18'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues;mi-guitar-acoustic'
                                             'bpm'  '113.708'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '1994 remaster'
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000253 00000253 00002959 00002959 0000573E 0000573E 00007658 00007667 '
 '0000AFD0 0000AFD0')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000009F0 00000000007B7080 00000000 0043207E 00000000 '
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'TALB' (Album/Movie/Show title)                     'The Complete Early Recordings'
'TBPM' (BPM (beats per minute))                     '113.708'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-blues', 'mi-guitar-acoustic']
'TDRC' (Recording time)                             '1994'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'What Am I to Do Blues'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Skip James'
'TRCK' (Track number/Position in set)               '17/18'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['guitar', 'blues', 'delta blues', 'folk', 'classic blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.765035'

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sKIP jAMES - The Complete Early Recordings [1994 remaster]/17. Skip James - What Am I to Do Blues.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  183
                                           'genre'  prerock-jb-blues;mi-guitar-acoustic
                                        'filesize'  4406474
                                           'mtime'  1620573769
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sKIP jAMES [1994 remaster] 17. prerock jb blues;mi guitar acoustic
                                      'tag_artist'  Skip James
                                     'tag_release'  The Complete Early Recordings
                                       'tag_title'  What Am I to Do Blues
                                             'bpm'  113.708
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                                   'search_artist'  'james':2 'skip':1
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                                    'search_combo'  '17':23,24 '1994':19,20 'acoustic':32 'am':2A 'ames':36 'blues':6A,27,29 'complete':10C 'country':16 'do':5A 'early':11C 'exotica':14 'guitar':31 'i':3A 'j':35 'james':8B,18 'jazz':13 'jb':26 'kip':34 'mi':28,30 'oldies':15 'prerock':25 'recordings':12C 'remaster':21,22 's':33 'skip':7B,17 'the':9C 'to':4A 'what':1A
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['guitar', 'blues', 'delta blues', 'folk', 'classic blues']
                                        'tag_date'  1994
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620573768.5650446  (2021-05-09 17:22:48)
                             'size'  4406474