======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '250'
                                          'artist'  'Dire Straits'
                                     'text_people'  ''
                                         'release'  'Brothers In Arms'
                                           'title'  'Walk of Life'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'guitar', 'blues', 'rock', 'classic rock']"
                                     'discogstags'  "['rock', 'classic rock', 'pop rock', 'soft rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '9'
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '114.999'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '8B38AA09+609129+9+150+100721'
'COMM:iTunes_CDDB_1:eng'                            '8B38AA09+609129+9+150+100721+267252+348884+479170+645700+782843+876884+948068'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '3'
'TALB' (Album/Movie/Show title)                     'Brothers In Arms'
'TBPM' (BPM (beats per minute))                     '114.999'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Walk of Life'
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '250000'
'TPE1' (Lead performer(s)/Soloist(s))               'Dire Straits'
'TPE2' (Band/orchestra/accompaniment)               'Dire Straits'
'TRCK' (Track number/Position in set)               '3/9'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 32bits version 3.99.5 (http://lame.sf.net)'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'classic rock', 'pop rock', 'soft rock']
'TXXX:lastfmtags'                                   ['80s', 'guitar', 'blues', 'rock', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.27 dB'
'TXXX:replaygain_track_peak'                        '0.515514'

========================== row from database ==========================
                                              'id'  1342861
                                            'path'  /data/Music/Bulk/00poprockelectronic/1985 complete/345 Dire Straits - Walk of Life.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  250
                                           'genre'  rock-unsorted
                                        'filesize'  10070285
                                           'mtime'  1620389112
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1985 complete 345 rock unsorted
                                      'tag_artist'  Dire Straits
                                     'tag_release'  Brothers In Arms
                                       'tag_title'  Walk of Life
                                             'bpm'  114.999
                                    'search_title'  'life':3 'of':2 'walk':1
                                   'search_artist'  'dire':1 'straits':2
                                  'search_release'  'arms':3 'brothers':1 'in':2
                                     'search_rest'  '00poprockelectronic':1 '1985':2 '345':4 'complete':3 'rock':5 'unsorted':6
                                    'search_combo'  '00poprockelectronic':9 '1985':10 '345':12 'arms':8C 'brothers':6C 'complete':11 'dire':4B 'in':7C 'life':3A 'of':2A 'rock':13 'straits':5B 'unsorted':14 'walk':1A
                                    '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-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'guitar', 'blues', 'rock', 'classic rock']
                                        'tag_date'  1985
                                     'discogstags'  ['rock', 'classic rock', 'pop rock', 'soft rock']

============================== file details ==============================
                                           'mtime'  1620389112.0128176  (2021-05-07 14:05:12)
                             'size'  10070285