======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '296'
                                          'artist'  'The Sisters of Mercy'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'comfortably numb'
                                           'quals'  ("['Q-UNU-1', 'Q-HAP-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'gothic rock', 'post punk', 'gothic', 'goth']"
                                     'discogstags'  "['goth rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'electronic-we-new wave or post punk'
                                             'bpm'  '112.696'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '112.696'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-new wave or post punk'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'comfortably numb'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Sisters of Mercy'
'TXXX:Mp3gain_minmax'                               '057,184'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'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'                                  ['goth rock', 'rock']
'TXXX:lastfmtags'                                   ['80s', 'gothic rock', 'post punk', 'gothic', 'goth']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.21 dB'
'TXXX:replaygain_track_peak'                        '0.646989'

========================== row from database ==========================
                                              'id'  1291721
                                            'path'  /data/Music/Bulk/00poprockelectronic/Sisters of Mercy/sisters of mercy - comfortably numb.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  296
                                           'genre'  electronic-we-new wave or post punk
                                        'filesize'  4749644
                                           'mtime'  1620572094
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic sisters mercy electronic we new wave post punk
                                      'tag_artist'  The Sisters of Mercy
                                     'tag_release'  None
                                       'tag_title'  comfortably numb
                                             'bpm'  112.696
                                    'search_title'  'comfortably':1 'numb':2
                                   'search_artist'  'mercy':4 'of':3 'sisters':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'electronic':4 'mercy':3 'new':6 'post':8 'punk':9 'sisters':2 'wave':7 'we':5
                                    'search_combo'  '00poprockelectronic':7 'comfortably':1A 'electronic':10 'mercy':6B,9 'new':12 'numb':2A 'of':5B 'post':14 'punk':15 'sisters':4B,8 'the':3B 'wave':13 'we':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'gothic rock', 'post punk', 'gothic', 'goth']
                                        'tag_date'  1990
                                     'discogstags'  ['goth rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620572094.153044  (2021-05-09 16:54:54)
                             'size'  4749644