======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '156'
                                          'artist'  'Hoagy Carmichael'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1947'
                                           'title'  'Ole Buttermilk Sky'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz vocal', 'jazz', 'big band', 'swing', 'piano']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '25'
                                      'tracktotal'  ''
                                            'date'  '1947'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '141.512'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1947'
'TBPM' (BPM (beats per minute))                     '141.512'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1947'
'TIT2' (Title/songname/content description)         'Ole Buttermilk Sky'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hoagy Carmichael'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '25'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz vocal', 'jazz', 'big band', 'swing', 'piano']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.63 dB'
'TXXX:replaygain_track_peak'                        '0.463706'

========================== row from database ==========================
                                              'id'  1316012
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1947/25 Hoagy Carmichael - Ole Buttermilk Sky.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  156
                                           'genre'  prerock-unsorted
                                        'filesize'  2504628
                                           'mtime'  1676045944
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 25 prerock unsorted
                                      'tag_artist'  Hoagy Carmichael
                                     'tag_release'  Billboard Top Pop Singles of 1947
                                       'tag_title'  Ole Buttermilk Sky
                                             'bpm'  141.512
                                    'search_title'  'buttermilk':2 'ole':1 'sky':3
                                   'search_artist'  'carmichael':2 'hoagy':1
                                  'search_release'  '1947':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '25':3 'prerock':4 'top100':2 'unsorted':5
                                    'search_combo'  '00poprockelectronic':12 '1947':11C '25':14 'billboard':6C 'buttermilk':2A 'carmichael':5B 'hoagy':4B 'of':10C 'ole':1A 'pop':8C 'prerock':15 'singles':9C 'sky':3A 'top':7C 'top100':13 'unsorted':16
                                    'tag_tracknum'  25
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['jazz vocal', 'jazz', 'big band', 'swing', 'piano']
                                        'tag_date'  1947
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1676045943.999453  (2023-02-10 17:19:03)
                             'size'  2504628