======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '273'
                                          'artist'  'The Moody Blues'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Forever Autumn'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'progressive rock', 'psychedelic', '60s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '130.1'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '130.1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Forever Autumn'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Moody Blues'
'TXXX:Mp3gain_minmax'                               '000,196'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'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'                                   ['rock', 'progressive rock', 'psychedelic', '60s', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.39 dB'
'TXXX:replaygain_track_peak'                        '0.524486'

========================== row from database ==========================
                                              'id'  1349339
                                            'path'  /data/Music/Bulk/00poprockelectronic/Moody Blues/Moody Blues - Forever Autumn.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  273
                                           'genre'  rock-cppex-classic
                                        'filesize'  4374248
                                           'mtime'  1636039309
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic rock cppex classic
                                      'tag_artist'  The Moody Blues
                                     'tag_release'  None
                                       'tag_title'  Forever Autumn
                                             'bpm'  130.1
                                    'search_title'  'autumn':2 'forever':1
                                   'search_artist'  'blues':3 'moody':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'classic':4 'cppex':3 'rock':2
                                    'search_combo'  '00poprockelectronic':6 'autumn':2A 'blues':5B 'classic':9 'cppex':8 'forever':1A 'moody':4B 'rock':7 'the':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'progressive rock', 'psychedelic', '60s', 'classic rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636039308.5492842  (2021-11-04 16:21:48)
                             'size'  4374248