======================== unified (from filesystem) ========================
                                         'bitrate'  '220.105'
                                        'duration'  '206'
                                          'artist'  'The Prodigy'
                                     'text_people'  ''
                                         'release'  'What Evil Lurks - Single'
                                           'title'  'BB. Everybody in the Place (Original Mix)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial', 'dance', 'techno', 'electronic', 'electronica']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '134.021'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'What Evil Lurks - Single'
'TBPM' (BPM (beats per minute))                     '134.021'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'BB. Everybody in the Place (Original Mix)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Prodigy'
'TPE2' (Band/orchestra/accompaniment)               'The Prodigy'
'TRCK' (Track number/Position in set)               '4'
'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:lastfmtags'                                   ['industrial', 'dance', 'techno', 'electronic', 'electronica']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.98 dB'
'TXXX:replaygain_track_peak'                        '0.643339'

========================== row from database ==========================
                                              'id'  1318801
                                            'path'  /data/Music/Bulk/00poprockelectronic/Prodigy/#singles/01. What Evil Lurks (1991)/BB. Everybody in the Place (Original Mix).mp3
                                         'working'  None
                                         'bitrate'  220
                                    'duration_sec'  206
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  5687145
                                           'mtime'  1621696498
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic #singles 01. (1991) electronic generic or radio bigbeat
                                      'tag_artist'  The Prodigy
                                     'tag_release'  What Evil Lurks - Single
                                       'tag_title'  BB. Everybody in the Place (Original Mix)
                                             'bpm'  134.021
                                    'search_title'  'bb':1,2 'everybody':3 'in':4 'mix':9,10 'original':7,8 'place':6 'the':5
                                   'search_artist'  'prodigy':2 'the':1
                                  'search_release'  'evil':2 'lurks':3 'single':4 'what':1
                                     'search_rest'  '00poprockelectronic':1 '01':4,5 '1991':6,7 'bigbeat':12 'electronic':8 'generic':9 'or':10 'radio':11 'singles':2,3
                                    'search_combo'  '00poprockelectronic':17 '01':20,21 '1991':22,23 'bb':1A,2A 'bigbeat':28 'electronic':24 'everybody':3A 'evil':14C 'generic':25 'in':4A 'lurks':15C 'mix':9A,10A 'or':26 'original':7A,8A 'place':6A 'prodigy':12B 'radio':27 'single':16C 'singles':18,19 'the':5A,11B 'what':13C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'dance', 'techno', 'electronic', 'electronica']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696497.733697  (2021-05-22 17:14:57)
                             'size'  5687145