======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '175'
                                          'artist'  'nirvana'
                                     'text_people'  ''
                                         'release'  'unplugged'
                                           'title'  'lake of fire'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['90s', 'alternative', 'grunge', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '144.645'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 0000054D 00000786 0000548B 00'
'COMM:iTunNORM:eng'                                 (' 0000054D 00000786 0000548B 0000BD3C 00026EDB 0001B4EA 000078B8 00007E16 '
 '000016F2 00015B64')
'TALB' (Album/Movie/Show title)                     'unplugged'
'TBPM' (BPM (beats per minute))                     '144.645'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'lake of fire'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'nirvana'
'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'                                   ['90s', 'alternative', 'grunge', 'rock']
'TXXX:original release date'                        ['1994', '1995']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.21 dB'
'TXXX:replaygain_track_peak'                        '0.492533'

========================== row from database ==========================
                                              'id'  1320957
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/nirvana - unplugged - lake of fire.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  175
                                           'genre'  rock-gr-grunge
                                        'filesize'  2817892
                                           'mtime'  1636903155
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] rock gr grunge
                                      'tag_artist'  nirvana
                                     'tag_release'  unplugged
                                       'tag_title'  lake of fire
                                             'bpm'  144.645
                                    'search_title'  'fire':3 'lake':1 'of':2
                                   'search_artist'  'nirvana':1
                                  'search_release'  'unplugged':1
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'gr':8 'grunge':9 'loose':3,4 'rock':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'files':10,11 'fire':3A 'gr':13 'grunge':14 'lake':1A 'loose':8,9 'nirvana':4B 'of':2A 'rock':12 'unplugged':5C 'unsorted':7
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['90s', 'alternative', 'grunge', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636903155.4630485  (2021-11-14 16:19:15)
                             'size'  2817892