======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '140'
                                          'artist'  'Art Mooney'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1948'
                                           'title'  'Baby Face'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all', 'vietnam', '40s', 'dead', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '23'
                                      'tracktotal'  ''
                                            'date'  '1948'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '113.073'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1948'
'TBPM' (BPM (beats per minute))                     '113.073'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1948'
'TIT2' (Title/songname/content description)         'Baby Face'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Art Mooney'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '23'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['all', 'vietnam', '40s', 'dead', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.23 dB'
'TXXX:replaygain_track_peak'                        '0.442189'

========================== row from database ==========================
                                              'id'  1318021
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1948/23 Art Mooney - Baby Face.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  140
                                           'genre'  prerock-band
                                        'filesize'  2256377
                                           'mtime'  1620561962
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 23 prerock band
                                      'tag_artist'  Art Mooney
                                     'tag_release'  Billboard Top Pop Singles of 1948
                                       'tag_title'  Baby Face
                                             'bpm'  113.073
                                    'search_title'  'baby':1 'face':2
                                   'search_artist'  'art':1 'mooney':2
                                  'search_release'  '1948':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '23':3 'band':5 'prerock':4 'top100':2
                                    'search_combo'  '00poprockelectronic':11 '1948':10C '23':13 'art':3B 'baby':1A 'band':15 'billboard':5C 'face':2A 'mooney':4B 'of':9C 'pop':7C 'prerock':14 'singles':8C 'top':6C 'top100':12
                                    'tag_tracknum'  23
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['all', 'vietnam', '40s', 'dead', 'pop']
                                        'tag_date'  1948
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561961.529539  (2021-05-09 14:06:01)
                             'size'  2256377