======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '150'
                                          'artist'  'Billy Leach'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Song Of The Barefoot Mailman '
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '437'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '89.295'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '89.295'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Song Of The Barefoot Mailman '
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Leach'
'TRCK' (Track number/Position in set)               '437'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.07 dB'
'TXXX:replaygain_track_peak'                        '0.460742'

========================== row from database ==========================
                                              'id'  1432598
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-437 - Billy Leach - Song Of The Barefoot Mailman.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  150
                                           'genre'  prerock-unsorted
                                        'filesize'  6022640
                                           'mtime'  1621698351
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 437 prerock unsorted
                                      'tag_artist'  Billy Leach
                                     'tag_release'  None
                                       'tag_title'  Song Of The Barefoot Mailman 
                                             'bpm'  89.295
                                    'search_title'  'barefoot':4 'mailman':5 'of':2 'song':1 'the':3
                                   'search_artist'  'billy':1 'leach':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1957':6 '437':8 '57':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':12 '1957':13 '437':15 '57':14 'barefoot':4A 'billy':6B 'country':11 'exotica':9 'jazz':8 'leach':7B 'mailman':5A 'of':2A 'oldies':10 'prerock':16 'song':1A 'the':3A 'unsorted':17
                                    'tag_tracknum'  437
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698351.0726857  (2021-05-22 17:45:51)
                             'size'  6022640