======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '157'
                                          'artist'  'Robert Johnson'
                                     'text_people'  ''
                                         'release'  'The Complete Recordings (disc 2)'
                                           'title'  'Hellhound On My Trail'
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                                      'lastfmtags'  "['guitar', 'acoustic', 'blues', 'delta blues', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '97.318'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'The Complete Recordings (disc 2)'
'TBPM' (BPM (beats per minute))                     '97.318'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-blues', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Hellhound On My Trail'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Robert Johnson'
'TRCK' (Track number/Position in set)               '6'
'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'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['guitar', 'acoustic', 'blues', 'delta blues', 'folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'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'
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========================== row from database ==========================
                                              'id'  674454
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Robert Johnson/Robert Johnson - The Complete Recordings (disc 2) - 06 - Hellhound On My Trail.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  157
                                           'genre'  prerock-jb-blues;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3790923
                                           'mtime'  1620346077
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 06 prerock jb blues;set shirleyspinoza;set mor
                                      'tag_artist'  Robert Johnson
                                     'tag_release'  The Complete Recordings (disc 2)
                                       'tag_title'  Hellhound On My Trail
                                             'bpm'  97.318
                                    'search_title'  'hellhound':1 'my':3 'on':2 'trail':4
                                   'search_artist'  'johnson':2 'robert':1
                                  'search_release'  '2':6,7 'complete':2 'disc':4,5 'recordings':3 'the':1
                                     'search_rest'  'blues':7,9 'country':4 'exotica':2 'jazz':1 'jb':6 'mor':15 'oldies':3 'prerock':5 'set':8,10,12,14 'shirleyspinoza':11,13
                                    'search_combo'  '2':12C,13C 'blues':20,22 'complete':8C 'country':17 'disc':10C,11C 'exotica':15 'hellhound':1A 'jazz':14 'jb':19 'johnson':6B 'mor':28 'my':3A 'oldies':16 'on':2A 'prerock':18 'recordings':9C 'robert':5B 'set':21,23,25,27 'shirleyspinoza':24,26 'the':7C 'trail':4A
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  9A
                                           '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'  1620346076.9699495  (2021-05-07 02:07:56)
                             'size'  3790923