======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '86'
                                          'artist'  'The Klokken Ringers'
                                     'text_people'  ''
                                         'release'  'A Festival of Bells'
                                           'title'  'Peacherine Rag'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', '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-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classical', 'bells']"
                                     'discogstags'  "['folk, world, & country', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'mi-bells;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '144.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'A Festival of Bells'
'TBPM' (BPM (beats per minute))                     '144.3'
'TCON' (Content type, a.k.a. Genre)                 ['mi-bells', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         'Peacherine Rag'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Klokken Ringers'
'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'                                  ['folk, world, & country', 'classical']
'TXXX:lastfmtags'                                   ['classical', 'bells']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.72 dB'
'TXXX:replaygain_track_peak'                        '0.879697'

========================== row from database ==========================
                                              'id'  718973
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The Klokken Ringers - A Festival of Bells/AFOBR 08 Peacherine Rag.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  86
                                           'genre'  mi-bells;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3478422
                                           'mtime'  1620528124
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm AFOBR 08 mi bells;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  The Klokken Ringers
                                     'tag_release'  A Festival of Bells
                                       'tag_title'  Peacherine Rag
                                             'bpm'  144.3
                                    'search_title'  'peacherine':1 'rag':2
                                   'search_artist'  'klokken':2 'ringers':3 'the':1
                                  'search_release'  'a':1 'bells':4 'festival':2 'of':3
                                     'search_rest'  'afobr':1 'bells':3,5 'mi':2 'mor':12 'pl':7 'set':4,6,9,11 'shirleyspinoza':8,10
                                    'search_combo'  'a':6C 'afobr':10 'bells':9C,12,14 'festival':7C 'klokken':4B 'mi':11 'mor':21 'of':8C 'peacherine':1A 'pl':16 'rag':2A 'ringers':5B 'set':13,15,18,20 'shirleyspinoza':17,19 'the':3B
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical', 'bells']
                                        'tag_date'  1978
                                     'discogstags'  ['folk, world, & country', 'classical']

============================== file details ==============================
                                           'mtime'  1620528123.8479536  (2021-05-09 04:42:03)
                             'size'  3478422