======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '298'
                                          'artist'  'Queen'
                                     'text_people'  ''
                                         'release'  'Jazz'
                                           'title'  'Bicycle Race (remix)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']"
                                     'discogstags'  "['rock', 'pop', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '85.924'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Jazz'
'TBPM' (BPM (beats per minute))                     '85.924'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Bicycle Race (remix)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Queen'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'pop rock']
'TXXX:lastfmtags'                                   ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.12 dB'
'TXXX:replaygain_track_peak'                        '0.854840'

========================== row from database ==========================
                                              'id'  1411982
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Queen/Jazz__cifs22c.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  298
                                           'genre'  rock-cppex-classic
                                        'filesize'  7161325
                                           'mtime'  1636038809
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy Jazz__cifs22c rock cppex classic
                                      'tag_artist'  Queen
                                     'tag_release'  Jazz
                                       'tag_title'  Bicycle Race (remix)
                                             'bpm'  85.924
                                    'search_title'  'bicycle':1 'race':2 'remix':3,4
                                   'search_artist'  'queen':1
                                  'search_release'  'jazz':1
                                     'search_rest'  'cifs22c':3 'classic':6 'classicprogpsy':1 'cppex':5 'jazz':2 'rock':4
                                    'search_combo'  'bicycle':1A 'cifs22c':9 'classic':12 'classicprogpsy':7 'cppex':11 'jazz':6C,8 'queen':5B 'race':2A 'remix':3A,4A 'rock':10
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1991
                                     'discogstags'  ['rock', 'pop', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636038808.6763399  (2021-11-04 16:13:28)
                             'size'  7161325