======================== unified (from filesystem) ========================
                                         'bitrate'  '198.4'
                                        'duration'  '128'
                                          'artist'  'Eddie Bond'
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                                           'title'  "Slip, Slip, Slippin' In"
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                                      'lastfmtags'  "['rockabilly', '50s', 'rock and roll', 'all', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  '155'
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '110.724'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'album'                                             'Big Box of Link Wray and More Kings of Distortion '
'albumartist'                                       'Various Artists'
'artist'                                            'Eddie Bond'
'bpm'                                               '110.724'
'city'                                              'Multiple'
'date'                                              '2014'
'discnumber'                                        '2'
'disctotal'                                         '6'
'genre'                                             'rock-pop-early'
'key'                                               '11B'
'label'                                             'Floating World'
'lastfmtags'                                        ['rockabilly', '50s', 'rock and roll', 'all', 'oldies']
'nation'                                            'Multiple'
'q-bass'                                            '4'
'q-busy'                                            '3'
'q-chart'                                           '2'
'q-drums'                                           '3'
'q-grit'                                            '2'
'q-hap'                                             '3'
'q-hhrnbtt'                                         '1'
'q-jzfks'                                           '1'
'q-localness'                                       '1'
'q-mixbeat'                                         '1'
'q-oldst'                                           '1'
'q-other'                                           '3'
'q-piano'                                           '1'
'q-play'                                            '2'
'q-syn'                                             '1'
'q-unu'                                             '1'
'q-vocals'                                          '3'
'replaygain_track_gain'                             '-7.12 dB'
'replaygain_track_peak'                             '0.849355'
'title'                                             "Slip, Slip, Slippin' In"
'tracknumber'                                       '21'
'tracktotal'                                        '155'

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00poprockelectronic/Big Box of Link Wray and More Kings of Distortion/Disc 2/21. Eddie Bond - Slip, Slip, Slippin_ In.ogg
                                         'working'  None
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                                    'duration_sec'  128
                                           'genre'  rock-pop-early
                                        'filesize'  2245588
                                           'mtime'  1620736873
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                                        'rest_str'   00poprockelectronic Disc 2 21. Slippin_ rock pop early
                                      'tag_artist'  Eddie Bond
                                     'tag_release'  Big Box of Link Wray and More Kings of Distortion 
                                       'tag_title'  Slip, Slip, Slippin' In
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                                     'search_rest'  '00poprockelectronic':1 '2':3 '21':4,5 'disc':2 'early':9 'pop':8 'rock':7 'slippin':6
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                                    'tag_tracknum'  21
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['q-mixbeat-1', 'q-chart-2', 'q-other-3', 'q-oldst-1', 'q-grit-2', 'q-drums-3', 'q-busy-3', 'q-localness-1', 'q-jzfks-1', 'q-hhrnbtt-1', 'q-vocals-3', 'q-syn-1', 'q-piano-1', 'q-play-2', 'q-bass-4', 'q-hap-3', 'q-unu-1']
                                      'lastfmtags'  ['rockabilly', '50s', 'rock and roll', 'all', 'oldies']
                                        'tag_date'  2014
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736872.5898988  (2021-05-11 14:41:12)
                             'size'  2245588