======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '188'
                                          'artist'  'Beatles'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Ob-La-Di, Ob-La-Da'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', 'rock', '60s', 'british', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '112.947'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '112.947'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TIT2' (Title/songname/content description)         'Ob-La-Di, Ob-La-Da'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Beatles'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic rock', 'rock', '60s', 'british', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.60 dB'
'TXXX:replaygain_track_peak'                        '0.486069'

========================== row from database ==========================
                                              'id'  1284978
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/The Beatles - Ob-La-Di, Ob-La-Da.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  188
                                           'genre'  rock-unsorted
                                        'filesize'  6043648
                                           'mtime'  1620389275
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic The rock unsorted
                                      'tag_artist'  Beatles
                                     'tag_release'  None
                                       'tag_title'  Ob-La-Di, Ob-La-Da
                                             'bpm'  112.947
                                    'search_title'  'da':7 'di':3 'la':2,6 'ob':1,5 'oblada':8 'obladi':4
                                   'search_artist'  'beatles':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'rock':3 'the':2 'unsorted':4
                                    'search_combo'  '00poprockelectronic':10 'beatles':9B 'da':7A 'di':3A 'la':2A,6A 'ob':1A,5A 'oblada':8A 'obladi':4A 'rock':12 'the':11 'unsorted':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', 'rock', '60s', 'british', 'pop']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389274.8458688  (2021-05-07 14:07:54)
                             'size'  6043648