======================== unified (from filesystem) ========================
                                         'bitrate'  '170.978'
                                        'duration'  '246'
                                          'artist'  'Soundgarden'
                                     'text_people'  ''
                                         'release'  'Superunknown'
                                           'title'  'Spoonman'
                                           '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-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock', 'stoner rock', 'grunge']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '16'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '124.2'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'DA114510'
'TALB' (Album/Movie/Show title)                     'Superunknown'
'TBPM' (BPM (beats per minute))                     '124.2'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Spoonman'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Soundgarden'
'TRCK' (Track number/Position in set)               '8/16'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.92, VBR 3, Stereo, High quality'
'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:discogstags'                                  ['rock', 'alternative rock', 'stoner rock', 'grunge']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.47 dB'
'TXXX:replaygain_track_peak'                        '0.702865'

========================== row from database ==========================
                                              'id'  1359113
                                            'path'  /data/Music/Bulk/00poprockelectronic/Soundgarden/Superunknown/SOUNDGARDEN - 08 - Spoonman.mp3
                                         'working'  None
                                         'bitrate'  171
                                    'duration_sec'  246
                                           'genre'  rock-gr-grunge
                                        'filesize'  5268870
                                           'mtime'  1636903106
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic SOUNDGARDEN 08 rock gr grunge
                                      'tag_artist'  Soundgarden
                                     'tag_release'  Superunknown
                                       'tag_title'  Spoonman
                                             'bpm'  124.2
                                    'search_title'  'spoonman':1
                                   'search_artist'  'soundgarden':1
                                  'search_release'  'superunknown':1
                                     'search_rest'  '00poprockelectronic':1 'gr':4 'grunge':5 'rock':3 'soundgarden':2
                                    'search_combo'  '00poprockelectronic':4 'gr':7 'grunge':8 'rock':6 'soundgarden':2B,5 'spoonman':1A 'superunknown':3C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           '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-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'hard rock', 'grunge', 'rock']
                                        'tag_date'  1989
                                     'discogstags'  ['rock', 'alternative rock', 'stoner rock', 'grunge']

============================== file details ==============================
                                           'mtime'  1636903105.5318542  (2021-11-14 16:18:25)
                             'size'  5268870