======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '171'
                                          'artist'  'King Cole Trio'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1948'
                                           'title'  'Nature Boy'
                                           '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'  "['blues', 'jazz', 'jazz vocal', '3 of 10 stars', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1948'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '136.736'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1948'
'TBPM' (BPM (beats per minute))                     '136.736'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1948'
'TIT2' (Title/songname/content description)         'Nature Boy'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'King Cole Trio'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '14'
'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'                                   ['blues', 'jazz', 'jazz vocal', '3 of 10 stars', 'swing']
'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'                        '+2.06 dB'
'TXXX:replaygain_track_peak'                        '0.553385'

========================== row from database ==========================
                                              'id'  1289861
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1948/14 King Cole Trio - Nature Boy.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  171
                                           'genre'  prerock-unsorted
                                        'filesize'  2745146
                                           'mtime'  1676045894
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 14 prerock unsorted
                                      'tag_artist'  King Cole Trio
                                     'tag_release'  Billboard Top Pop Singles of 1948
                                       'tag_title'  Nature Boy
                                             'bpm'  136.736
                                    'search_title'  'boy':2 'nature':1
                                   'search_artist'  'cole':2 'king':1 'trio':3
                                  'search_release'  '1948':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'prerock':3 'top100':2 'unsorted':4
                                    'search_combo'  '00poprockelectronic':12 '1948':11C 'billboard':6C 'boy':2A 'cole':4B 'king':3B 'nature':1A 'of':10C 'pop':8C 'prerock':14 'singles':9C 'top':7C 'top100':13 'trio':5B 'unsorted':15
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  7A
                                           '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'  ['blues', 'jazz', 'jazz vocal', '3 of 10 stars', 'swing']
                                        'tag_date'  1948
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1676045894.1377125  (2023-02-10 17:18:14)
                             'size'  2745146