======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '380'
                                          'artist'  'VNV Nation'
                                     'text_people'  ''
                                         'release'  'Empires'
                                           'title'  'Rubicon'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['ebm', 'industrial', 'electronic', 'synthpop', 'futurepop']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave;set-pl-sced'
                                             'bpm'  '134.110'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000007F4 000007C5 000023CD'
'COMM:iTunNORM:eng'                                 (' 000007F4 000007C5 000023CD 000021F2 00029855 00029855 00008000 00008000 '
 '0001119E 00015FBE')
'TALB' (Album/Movie/Show title)                     'Empires'
'TBPM' (BPM (beats per minute))                     '134.110'
'TCON' (Content type, a.k.a. Genre)                 ['eid-ebm or industrial or darkwave', 'set-pl-sced']
'TDRC' (Recording time)                             '1999'
'TFLT' (File type)                                  '/3'
'TIT2' (Title/songname/content description)         'Rubicon'
'TKEY' (Initial key)                                '5A'
'TMED' (Media type)                                 '(CD/DD)'
'TPE1' (Lead performer(s)/Soloist(s))               'VNV Nation'
'TPE2' (Band/orchestra/accompaniment)               'VNV Nation'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['ebm', 'industrial', 'electronic', 'synthpop', 'futurepop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.56 dB'
'TXXX:replaygain_track_peak'                        '0.548922'

========================== row from database ==========================
                                              'id'  299218
                                            'path'  /data/Music/Bulk/00dwimp/VNV Nation/[1999] Empires/03 Rubicon.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  380
                                           'genre'  eid-ebm or industrial or darkwave;set-pl-sced
                                        'filesize'  9155570
                                           'mtime'  1620296834
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp [1999] 03 eid ebm or industrial or darkwave;set pl sced
                                      'tag_artist'  VNV Nation
                                     'tag_release'  Empires
                                       'tag_title'  Rubicon
                                             'bpm'  134.11
                                    'search_title'  'rubicon':1
                                   'search_artist'  'nation':2 'vnv':1
                                  'search_release'  'empires':1
                                     'search_rest'  '00dwimp':1 '1999':2,3 'darkwave':8,10 'ebm':5 'eid':4 'industrial':7 'or':6 'pl':12 'sced':13 'set':9,11
                                    'search_combo'  '00dwimp':5 '1999':6,7 'darkwave':12,14 'ebm':9 'eid':8 'empires':4C 'industrial':11 'nation':3B 'or':10 'pl':16 'rubicon':1A 'sced':17 'set':13,15 'vnv':2B
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['ebm', 'industrial', 'electronic', 'synthpop', 'futurepop']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620296834.2533834  (2021-05-06 12:27:14)
                             'size'  9155570