======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '190'
                                          'artist'  'EZ rollers'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Breakbeat Generation'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-1', 'q-bass-3', "
 "'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-4', 'q-other-3', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['drum and bass', 'jungle', 'electronic', 'dnb', 'drum n bass']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '136.8'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '136.8'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TIT2' (Title/songname/content description)         'Breakbeat Generation'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'EZ rollers'
'TXXX:Mp3gain_minmax'                               '068,182'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['drum and bass', 'jungle', 'electronic', 'dnb', 'drum n bass']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.63 dB'
'TXXX:replaygain_track_peak'                        '0.565235'

========================== row from database ==========================
                                              'id'  1344218
                                            'path'  /data/Music/Bulk/00poprockelectronic/EZ rollers/Ez Rollers - Breakbeat Generation.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  190
                                           'genre'  loc-unsorted
                                        'filesize'  4566502
                                           'mtime'  1621697704
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Ez Rollers loc unsorted
                                      'tag_artist'  EZ rollers
                                     'tag_release'  None
                                       'tag_title'  Breakbeat Generation
                                             'bpm'  136.8
                                    'search_title'  'breakbeat':1 'generation':2
                                   'search_artist'  'ez':1 'rollers':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'ez':2 'loc':4 'rollers':3 'unsorted':5
                                    'search_combo'  '00poprockelectronic':5 'breakbeat':1A 'ez':3B,6 'generation':2A 'loc':8 'rollers':4B,7 'unsorted':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['drum and bass', 'jungle', 'electronic', 'dnb', 'drum n bass']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697704.221294  (2021-05-22 17:35:04)
                             'size'  4566502