======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '238'
                                          'artist'  'Genesis'
                                     'text_people'  ''
                                         'release'  'Turn It on Again'
                                           'title'  'Misunderstanding (live)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-4', 'q-other-2', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'rock', 'progressive rock', 'progressive', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1982'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-billboard'
                                             'bpm'  '85.058'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Turn It on Again'
'TBPM' (BPM (beats per minute))                     '85.058'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-billboard']
'TDRC' (Recording time)                             '1982'
'TIT2' (Title/songname/content description)         'Misunderstanding (live)'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Genesis'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'rock', 'progressive rock', 'progressive', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.59 dB'
'TXXX:replaygain_track_peak'                        '0.689219'

========================== row from database ==========================
                                              'id'  1505228
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0258 genesis - Turn It On Again/Turn It on Again - Best of _81 - _83-09-Misunderstanding (live).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  238
                                           'genre'  rock-cppex-progressive;set-pl-billboard
                                        'filesize'  5715461
                                           'mtime'  1620737827
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0258 genesis On Best of _81 _83 09 rock cppex progressive;set pl billboard
                                      'tag_artist'  Genesis
                                     'tag_release'  Turn It on Again
                                       'tag_title'  Misunderstanding (live)
                                             'bpm'  85.058
                                    'search_title'  'live':2,3 'misunderstanding':1
                                   'search_artist'  'genesis':1
                                  'search_release'  'again':4 'it':2 'on':3 'turn':1
                                     'search_rest'  '00poprockelectronic':1 '0258':5 '1000':4 '81':10 '83':11 'album':2 'best':8 'billboard':19 'cppex':13 'genesis':6 'of':9 'on':7 'pl':18 'progressive':14,16 'rock':12 'set':15,17 'top':3
                                    'search_combo'  '00poprockelectronic':9 '0258':13 '1000':12 '81':18 '83':19 'again':8C 'album':10 'best':16 'billboard':27 'cppex':21 'genesis':4B,14 'it':6C 'live':2A,3A 'misunderstanding':1A 'of':17 'on':7C,15 'pl':26 'progressive':22,24 'rock':20 'set':23,25 'top':11 'turn':5C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'rock', 'progressive rock', 'progressive', 'classic rock']
                                        'tag_date'  1982
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737826.8356934  (2021-05-11 14:57:06)
                             'size'  5715461