======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '4710'
                                          'artist'  'Olivier Weiter'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-OLDST-3', 'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', "
 "'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['tech house']"
                                     'discogstags'  "['electronic', 'deep house', 'tech house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '123.935'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '123.935'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Olivier Weiter'
'TXXX:Mp3gain_minmax'                               '053,212'
'TXXX:Mp3gain_undo'                                 '-002,-002,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'deep house', 'tech house']
'TXXX:lastfmtags'                                   'tech house'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.65 dB'
'TXXX:replaygain_track_peak'                        '0.961919'

========================== row from database ==========================
                                              'id'  1327605
                                            'path'  /data/Music/Bulk/00poprockelectronic/sets/Olivier Weiter - April 2011.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  4710
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  188420425
                                           'mtime'  1620573859
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic sets April 2011 electronic generic or radio dance
                                      'tag_artist'  Olivier Weiter
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  123.935
                                    'search_title'  None
                                   'search_artist'  'olivier':1 'weiter':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '2011':4 'april':3 'dance':9 'electronic':5 'generic':6 'or':7 'radio':8 'sets':2
                                    'search_combo'  '00poprockelectronic':3 '2011':6 'april':5 'dance':11 'electronic':7 'generic':8 'olivier':1B 'or':9 'radio':10 'sets':4 'weiter':2B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-piano-1', 'q-syn-3', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['tech house']
                                        'tag_date'  
                                     'discogstags'  ['electronic', 'deep house', 'tech house']

============================== file details ==============================
                                           'mtime'  1620573858.842644  (2021-05-09 17:24:18)
                             'size'  188420425