======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '163'
                                          'artist'  'Creedence Clearwater Revival'
                                     'text_people'  ''
                                         'release'  'Chronicle'
                                           'title'  'Down on the Corner'
                                           '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-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['southern rock', 'rock', 'folk', '60s', 'classic rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '108.355'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Chronicle'
'TBPM' (BPM (beats per minute))                     '108.355'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Down on the Corner'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Creedence Clearwater Revival'
'TRCK' (Track number/Position in set)               '8'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['southern rock', 'rock', 'folk', '60s', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.94 dB'
'TXXX:replaygain_track_peak'                        '0.700625'

========================== row from database ==========================
                                              'id'  1355498
                                            'path'  /data/Music/Bulk/00poprockelectronic/Creedence Clearwater Revival/Creedence Clearwater Revival__Chronicle__cifs4b3e.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  163
                                           'genre'  rock-cppex-classic
                                        'filesize'  2619218
                                           'mtime'  1636039165
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Revival__Chronicle__cifs4b3e rock cppex classic
                                      'tag_artist'  Creedence Clearwater Revival
                                     'tag_release'  Chronicle
                                       'tag_title'  Down on the Corner
                                             'bpm'  108.355
                                    'search_title'  'corner':4 'down':1 'on':2 'the':3
                                   'search_artist'  'clearwater':2 'creedence':1 'revival':3
                                  'search_release'  'chronicle':1
                                     'search_rest'  '00poprockelectronic':1 'chronicle':3 'cifs4b3e':4 'classic':7 'cppex':6 'revival':2 'rock':5
                                    'search_combo'  '00poprockelectronic':9 'chronicle':8C,11 'cifs4b3e':12 'classic':15 'clearwater':6B 'corner':4A 'cppex':14 'creedence':5B 'down':1A 'on':2A 'revival':7B,10 'rock':13 'the':3A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['southern rock', 'rock', 'folk', '60s', 'classic rock']
                                        'tag_date'  1993
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636039165.1808505  (2021-11-04 16:19:25)
                             'size'  2619218