======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '178'
                                          'artist'  'Leon McAuliffe'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Rag Mop (1950)'
                                           'quals'  ("['Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['all', 'country', 'steel guitar', 'spotify', 'instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '100.108'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '100.108'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TIT2' (Title/songname/content description)         'Rag Mop (1950)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Leon McAuliffe'
'TXXX:Mp3gain_minmax'                               '139,179'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['all', 'country', 'steel guitar', 'spotify', 'instrumental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.08 dB'
'TXXX:replaygain_track_peak'                        '0.702304'

========================== row from database ==========================
                                              'id'  762637
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/Leon McAuliffe - Rag Mop (1950).mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  178
                                           'genre'  set-pl-spelling
                                        'filesize'  2144375
                                           'mtime'  1620356372
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  Leon McAuliffe
                                     'tag_release'  None
                                       'tag_title'  Rag Mop (1950)
                                             'bpm'  100.108
                                    'search_title'  '1950':3,4 'mop':2 'rag':1
                                   'search_artist'  'auliffe':4 'leon':1 'mc':3 'mcauliffe':2
                                  'search_release'  
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':10 '0playlists':9 '1950':3A,4A 'auliffe':8B 'leon':5B 'mc':7B 'mcauliffe':6B 'mop':2A 'pl':14 'rag':1A 'set':13 'spelling':12 'themes':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['all', 'country', 'steel guitar', 'spotify', 'instrumental']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620356372.262201  (2021-05-07 04:59:32)
                             'size'  2144375