======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '238'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'The Man Who Sold the World'
                                           'title'  'The Man Who Sold The World'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  "['glam', 'blues rock', 'alternative rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '118.497'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Man Who Sold the World'
'TBPM' (BPM (beats per minute))                     '118.497'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         'The Man Who Sold The World'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'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'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['glam', 'blues rock', 'alternative rock', 'rock']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.31 dB'
'TXXX:replaygain_track_peak'                        '0.698811'

========================== row from database ==========================
                                              'id'  183458
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/MBZ;#David Bowie;#The Man Who Sold The World;#08;#The Man Who Sold The World.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  238
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  5717477
                                           'mtime'  1623430289
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos MBZ;#David Bowie;#The World;#08;#The ifs songwriter eos
                                      'tag_artist'  David Bowie
                                     'tag_release'  The Man Who Sold the World
                                       'tag_title'  The Man Who Sold The World
                                             'bpm'  118.497
                                    'search_title'  'man':2 'sold':4 'the':1 'who':3 'world':5
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'man':2 'sold':4 'the':1 'who':3 'world':5
                                     'search_rest'  '00singer':1 '08':13,16 'bowie':8,10 'david':5,7 'eos':3 'ifs':18 'mbz':4,6 'songwriter':2 'the':9,11,14,17 'world':12,15
                                    'search_combo'  '00singer':13 '08':25,28 'bowie':7B,20,22 'david':6B,17,19 'eos':15 'ifs':30 'man':2A,9C 'mbz':16,18 'sold':4A,11C 'songwriter':14 'the':1A,8C,21,23,26,29 'who':3A,10C 'world':5A,12C,24,27
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1973
                                     'discogstags'  ['glam', 'blues rock', 'alternative rock', 'rock']

============================== file details ==============================
                                           'mtime'  1623430288.834017  (2021-06-11 18:51:28)
                             'size'  5717477