======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '199'
                                          'artist'  'Jethro Tull'
                                     'text_people'  ''
                                         'release'  'War Child [Bonus Tracks]'
                                           'title'  'Ladies'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['folk rock', 'rock', 'progressive rock', 'progressive', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;rock-cppex-progressive'
                                             'bpm'  '143.721'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'War Child [Bonus Tracks]'
'TBPM' (BPM (beats per minute))                     '143.721'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'rock-cppex-progressive']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Ladies'
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '199000'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Jethro Tull'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['folk rock', 'rock', 'progressive rock', 'progressive', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '3'
'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'                        '+0.62 dB'
'TXXX:replaygain_track_peak'                        '0.739029'

========================== row from database ==========================
                                              'id'  1308776
                                            'path'  /data/Music/Bulk/00poprockelectronic/Jethro Tull/Jethro Tull - 1974 - War Child/Jethro Tull - War Child - 03 - Ladies.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  199
                                           'genre'  rock-cppex-classic;rock-cppex-progressive
                                        'filesize'  3205078
                                           'mtime'  1636039253
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1974 03 rock cppex classic;rock cppex progressive
                                      'tag_artist'  Jethro Tull
                                     'tag_release'  War Child [Bonus Tracks]
                                       'tag_title'  Ladies
                                             'bpm'  143.721
                                    'search_title'  'ladies':1
                                   'search_artist'  'jethro':1 'tull':2
                                  'search_release'  'bonus':3,4 'child':2 'tracks':5,6 'war':1
                                     'search_rest'  '00poprockelectronic':1 '1974':2 'classic':5,7 'cppex':4 'progressive':9 'rock':3,6,8
                                    'search_combo'  '00poprockelectronic':10 '1974':11 'bonus':6C,7C 'child':5C 'classic':14,16 'cppex':13 'jethro':2B 'ladies':1A 'progressive':18 'rock':12,15,17 'tracks':8C,9C 'tull':3B 'war':4C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['folk rock', 'rock', 'progressive rock', 'progressive', 'classic rock']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636039253.4369853  (2021-11-04 16:20:53)
                             'size'  3205078