======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '247'
                                          'artist'  'Earth, Wind and Fire'
                                     'text_people'  ''
                                         'release'  'The Dutch Collection (Disc 1)'
                                           'title'  'System Of Survival'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-3', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['funk', 'soul', 'disco', '70s', 'rnb']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '120.902'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Buzzed'
'TALB' (Album/Movie/Show title)                     'The Dutch Collection (Disc 1)'
'TBPM' (BPM (beats per minute))                     '120.902'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'System Of Survival'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Earth, Wind and Fire'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['funk', 'soul', 'disco', '70s', 'rnb']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.74 dB'
'TXXX:replaygain_track_peak'                        '0.652593'

========================== row from database ==========================
                                              'id'  1351137
                                            'path'  /data/Music/Bulk/00poprockelectronic/Wind and Fire Earth/Earth, Wind and Fire__Earth, Wind And Fire__MBZ;#Earth, Wind and Fire;#The Dutch Collection (disc 1);#14;#System Of Survival.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  247
                                           'genre'  funk or soul
                                        'filesize'  3971493
                                           'mtime'  1628357968
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Fire__Earth, And Fire__MBZ;#Earth, Fire;#The (disc 1);#14;#System funk or soul
                                      'tag_artist'  Earth, Wind and Fire
                                     'tag_release'  The Dutch Collection (Disc 1)
                                       'tag_title'  System Of Survival
                                             'bpm'  120.902
                                    'search_title'  'of':2 'survival':3 'system':1
                                   'search_artist'  'and':4 'earth':1,2 'fire':5 'wind':3
                                  'search_release'  '1':6,7 'collection':3 'disc':4,5 'dutch':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '1':19,22 '14':20,23 'and':6 'disc':17,18 'earth':3,5,9,12 'fire':2,4,7,10,13,15 'funk':25 'mbz':8,11 'or':26 'soul':27 'system':21,24 'the':14,16
                                    'search_combo'  '00poprockelectronic':16 '1':14C,15C,34,37 '14':35,38 'and':7B,21 'collection':11C 'disc':12C,13C,32,33 'dutch':10C 'earth':4B,5B,18,20,24,27 'fire':8B,17,19,22,25,28,30 'funk':40 'mbz':23,26 'of':2A 'or':41 'soul':42 'survival':3A 'system':1A,36,39 'the':9C,29,31 'wind':6B
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'soul', 'disco', '70s', 'rnb']
                                        'tag_date'  1987
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357967.5095594  (2021-08-07 19:39:27)
                             'size'  3971493