======================== unified (from filesystem) ========================
                                         'bitrate'  '183.608'
                                        'duration'  '264'
                                          'artist'  'KMFDM'
                                     'text_people'  ''
                                         'release'  'Opium 1984'
                                           'title'  'RAF OK'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial metal', 'german', 'industrial', 'electronic', 'industrial rock']"
                                     'discogstags'  "['electronic', 'industrial']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '138.607'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Opium 1984'
'TBPM' (BPM (beats per minute))                     '138.607'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'RAF OK'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'KMFDM'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'industrial']
'TXXX:lastfmtags'                                   ['industrial metal', 'german', 'industrial', 'electronic', 'industrial rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'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'                        '-1.77 dB'
'TXXX:replaygain_track_peak'                        '0.501125'

========================== row from database ==========================
                                              'id'  1398027
                                            'path'  /data/Music/Bulk/00dwimp/00ebm-industrial-darkwave-goth/KMFDM/KMFDM - 09 - Opium - RAF Ok.mp3
                                         'working'  None
                                         'bitrate'  183
                                    'duration_sec'  264
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  6075936
                                           'mtime'  1620296012
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth 09 Ok eid ebm or industrial or darkwave
                                      'tag_artist'  KMFDM
                                     'tag_release'  Opium 1984
                                       'tag_title'  RAF OK
                                             'bpm'  138.607
                                    'search_title'  'ok':2 'raf':1
                                   'search_artist'  'kmfdm':1
                                  'search_release'  '1984':2 'opium':1
                                     'search_rest'  '00dwimp':1 '00ebm':2 'darkwave':4 'ebm':8 'eid':7 'goth':5 'industrial':3 'ok':6 'or':9
                                    'search_combo'  '00dwimp':6 '00ebm':7 '1984':5C 'darkwave':9 'ebm':13 'eid':12 'goth':10 'industrial':8 'kmfdm':3B 'ok':2A,11 'opium':4C 'or':14 'raf':1A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['industrial metal', 'german', 'industrial', 'electronic', 'industrial rock']
                                        'tag_date'  2002
                                     'discogstags'  ['electronic', 'industrial']

============================== file details ==============================
                                           'mtime'  1620296011.9324872  (2021-05-06 12:13:31)
                             'size'  6075936