======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '271'
                                          'artist'  'Klaha'
                                     'text_people'  ''
                                         'release'  'Mdrchen'
                                           'title'  'Maarchen'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['j pop', 'jrock', 'visual kei', 'japanese', 'jpop', 'j rock']"
                                     'discogstags'  "['j-pop', 'pop', 'ballad']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '6'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'rock-pop-jrock-visualkei;loc-asia-japan-jrock'
                                             'bpm'  '139.851'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00003525 0000094D 00018492'
'COMM:iTunNORM:eng'                                 (' 00003525 0000094D 00018492 0000747E 000260C6 00028D43 00008A3B 00008C55 '
 '0001A7C6 0000321A')
'COMM:iTunes_CDDB_IDs:eng'                          '6+A6784783DE135BCA273835665DE05EC5+2841944'
'TALB' (Album/Movie/Show title)                     'Mdrchen'
'TBPM' (BPM (beats per minute))                     '139.851'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-jrock-visualkei', 'loc-asia-japan-jrock']
'TDRC' (Recording time)                             '2003'
'TENC' (Encoded by)                                 'iTunes v4.9.0.17'
'TIT2' (Title/songname/content description)         'Maarchen'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Klaha'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['j-pop', 'pop', 'ballad']
'TXXX:lastfmtags'                                   ['j pop', 'jrock', 'visual kei', 'japanese', 'jpop', 'j rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.29 dB'
'TXXX:replaygain_track_peak'                        '0.412760'

========================== row from database ==========================
                                              'id'  1374421
                                            'path'  /data/Music/Bulk/00poprockelectronic/Klaha/Märchen/02 Maarchen.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  271
                                           'genre'  rock-pop-jrock-visualkei;loc-asia-japan-jrock
                                        'filesize'  5432526
                                           'mtime'  1622801911
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Märchen 02 rock pop jrock visualkei;loc asia japan jrock
                                      'tag_artist'  Klaha
                                     'tag_release'  Mdrchen
                                       'tag_title'  Maarchen
                                             'bpm'  139.851
                                    'search_title'  'maarchen':1
                                   'search_artist'  'klaha':1
                                  'search_release'  'mdrchen':1
                                     'search_rest'  '00poprockelectronic':1 'asia':11 'japan':12 'jrock':6 'loc':8,10 'marchen':2,3 'pop':5 'rock':4 'visualkei':7,9
                                    'search_combo'  '00poprockelectronic':4 'asia':14 'japan':15 'jrock':9 'klaha':2B 'loc':11,13 'maarchen':1A 'marchen':5,6 'mdrchen':3C 'pop':8 'rock':7 'visualkei':10,12
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['j pop', 'jrock', 'visual kei', 'japanese', 'jpop', 'j rock']
                                        'tag_date'  2003
                                     'discogstags'  ['j-pop', 'pop', 'ballad']

============================== file details ==============================
                                           'mtime'  1622801910.9316375  (2021-06-04 12:18:30)
                             'size'  5432526