======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '253'
                                          'artist'  'Robert Palmer'
                                     'text_people'  ''
                                         'release'  'The Final Countdown  Vol 1 (disc 1)'
                                           'title'  'Simply Irresistible'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'classic rock', 'british', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'prerock-jb-unsorted'
                                             'bpm'  '142.307'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Final Countdown  Vol 1 (disc 1)'
'TBPM' (BPM (beats per minute))                     '142.307'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-unsorted'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Simply Irresistible'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Robert Palmer'
'TRCK' (Track number/Position in set)               '06'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'classic rock', 'british', 'pop', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+4.24 dB'
'TXXX:replaygain_track_peak'                        '0.876983'

========================== row from database ==========================
                                              'id'  674094
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Robert Palmer/MBZ;#Robert Palmer;#The Final Countdown  Vol 1 (disc 1);#06;#Simply Irresistible.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  253
                                           'genre'  prerock-jb-unsorted
                                        'filesize'  4063250
                                           'mtime'  1620534143
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#Robert Palmer;#The 1);#06;#Simply prerock jb unsorted
                                      'tag_artist'  Robert Palmer
                                     'tag_release'  The Final Countdown  Vol 1 (disc 1)
                                       'tag_title'  Simply Irresistible
                                             'bpm'  142.307
                                    'search_title'  'irresistible':2 'simply':1
                                   'search_artist'  'palmer':2 'robert':1
                                  'search_release'  '1':5,8 'countdown':3 'disc':6,7 'final':2 'the':1 'vol':4
                                     'search_rest'  '06':14,17 '1':13,16 'country':4 'exotica':2 'jazz':1 'jb':20 'mbz':5,7 'oldies':3 'palmer':9,11 'prerock':19 'robert':6,8 'simply':15,18 'the':10,12 'unsorted':21
                                    'search_combo'  '06':26,29 '1':9C,12C,25,28 'countdown':7C 'country':16 'disc':10C,11C 'exotica':14 'final':6C 'irresistible':2A 'jazz':13 'jb':32 'mbz':17,19 'oldies':15 'palmer':4B,21,23 'prerock':31 'robert':3B,18,20 'simply':1A,27,30 'the':5C,22,24 'unsorted':33 'vol':8C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'classic rock', 'british', 'pop', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620534143.1460896  (2021-05-09 06:22:23)
                             'size'  4063250