======================== unified (from filesystem) ========================
                                         'bitrate'  '252.345'
                                        'duration'  '204'
                                          'artist'  'The Prodigy'
                                     'text_people'  ''
                                         'release'  'Fire / Jericho'
                                           'title'  'Fire (edit)'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial', 'dance', 'techno', 'electronic', 'electronica']"
                                     'discogstags'  "['electronic', 'breakbeat']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '144.028'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Fire / Jericho'
'TBPM' (BPM (beats per minute))                     '144.028'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Fire (edit)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Prodigy'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'breakbeat']
'TXXX:lastfmtags'                                   ['industrial', 'dance', 'techno', 'electronic', 'electronica']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.62 dB'
'TXXX:replaygain_track_peak'                        '0.614857'

========================== row from database ==========================
                                              'id'  1403599
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Prodigy/Fire - Jericho (1992)/MBZ;#The Prodigy;#Fire Jericho;#01;#Fire (edit).mp3
                                         'working'  None
                                         'bitrate'  252
                                    'duration_sec'  204
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  6450946
                                           'mtime'  1621695867
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat (1992) MBZ;#The Prodigy;#Fire Jericho;#01;#Fire electronic generic or radio bigbeat
                                      'tag_artist'  The Prodigy
                                     'tag_release'  Fire / Jericho
                                       'tag_title'  Fire (edit)
                                             'bpm'  144.028
                                    'search_title'  'edit':2,3 'fire':1
                                   'search_artist'  'prodigy':2 'the':1
                                  'search_release'  'fire':1 'jericho':2
                                     'search_rest'  '00poprockelectronic':1 '01':16,19 '1992':5,6 'bigbeat':24 'dance':3 'electronic':21 'fire':12,14,17,20 'generic':2 'jericho':15,18 'mbz':7,9 'or':22 'prodigy':11,13 'radio':23 'the':8,10 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':8 '01':23,26 '1992':12,13 'bigbeat':31 'dance':10 'edit':2A,3A 'electronic':28 'fire':1A,6C,19,21,24,27 'generic':9 'jericho':7C,22,25 'mbz':14,16 'or':29 'prodigy':5B,18,20 'radio':30 'the':4B,15,17 'trapbeat':11
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'dance', 'techno', 'electronic', 'electronica']
                                        'tag_date'  1992
                                     'discogstags'  ['electronic', 'breakbeat']

============================== file details ==============================
                                           'mtime'  1621695866.9148526  (2021-05-22 17:04:26)
                             'size'  6450946