======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '250'
                                          'artist'  'Foo Fighters'
                                     'text_people'  ''
                                         'release'  '100 Greatest Rock Songs Of The 90s'
                                           'title'  'Everlong'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '40'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '105.532'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100 Greatest Rock Songs Of The 90s'
'TBPM' (BPM (beats per minute))                     '105.532'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Everlong'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Foo Fighters'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '40'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.79 dB'
'TXXX:replaygain_track_peak'                        '0.369729'

========================== row from database ==========================
                                              'id'  1358785
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/40-Foo_Fighters-Everlong.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  250
                                           'genre'  rock-gr-grunge
                                        'filesize'  6022792
                                           'mtime'  1636902860
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 40 Foo_Fighters rock gr grunge
                                      'tag_artist'  Foo Fighters
                                     'tag_release'  100 Greatest Rock Songs Of The 90s
                                       'tag_title'  Everlong
                                             'bpm'  105.532
                                    'search_title'  'everlong':1
                                   'search_artist'  'fighters':2 'foo':1
                                  'search_release'  '100':1 '90s':7 'greatest':2 'of':5 'rock':3 'songs':4 'the':6
                                     'search_rest'  '00poprockelectronic':1 '40':2 'fighters':4 'foo':3 'gr':6 'grunge':7 'rock':5
                                    'search_combo'  '00poprockelectronic':11 '100':4C '40':12 '90s':10C 'everlong':1A 'fighters':3B,14 'foo':2B,13 'gr':16 'greatest':5C 'grunge':17 'of':8C 'rock':6C,15 'songs':7C 'the':9C
                                    'tag_tracknum'  40
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636902859.972078  (2021-11-14 16:14:19)
                             'size'  6022792