======================== unified (from filesystem) ========================
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                                        'duration'  '157'
                                          'artist'  'Robert Johnson'
                                     'text_people'  ''
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                                           'title'  "I'm A Steady Rollin' Man"
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                                      'lastfmtags'  "['guitar', 'acoustic', 'blues', 'delta blues', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '100.755'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
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'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         "I'm A Steady Rollin' Man"
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Robert Johnson'
'TRCK' (Track number/Position in set)               '4'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.81.01, Fraunhofer acm, 192 kBit/s, 44,100 Hz, Stereo, HQ = on'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
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'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['guitar', 'acoustic', 'blues', 'delta blues', 'folk']
'TXXX:q-bass'                                       '1'
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'TXXX:q-drums'                                      '1'
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'TXXX:q-mixbeat'                                    '1'
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'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
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========================== row from database ==========================
                                              'id'  1517648
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Robert Johnson/Robert Johnson - The Complete Recordings (disc 2) - 04 - I_m A Steady Rollin_ Man.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  157
                                           'genre'  prerock-jb-blues
                                        'filesize'  3789065
                                           'mtime'  1620402539
                                   'redo_metaread'  0
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                                      'tag_artist'  Robert Johnson
                                     'tag_release'  The Complete Recordings (disc 2)
                                       'tag_title'  I'm A Steady Rollin' Man
                                             'bpm'  100.755
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                                   'search_artist'  'johnson':2 'robert':1
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                                     'search_rest'  'blues':10 'country':4 'exotica':2 'i':5 'jazz':1 'jb':9 'm':6 'oldies':3 'prerock':8 'rollin':7
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                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['guitar', 'acoustic', 'blues', 'delta blues', 'folk']
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402539.2109268  (2021-05-07 17:48:59)
                             'size'  3789065