======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '141'
                                          'artist'  'The Coasters'
                                     'text_people'  ''
                                         'release'  'The Very Best of the Coasters'
                                           'title'  'Young Blood'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', '60s', 'soul', 'oldies', 'rockabilly']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '077'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rockabilly'
                                             'bpm'  '111.640'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
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'PRIV:WM/WMCollectionID:ù¯g¡\x8dV\x00L¸¾·#9Þ«\x8b'  PRIV(owner='WM/WMCollectionID', data=b'\xf9\xafg\xa1\x8dV\x00L\xb8\xbe\xb7#9\xde\xab\x8b')
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'TALB' (Album/Movie/Show title)                     'The Very Best of the Coasters'
'TBPM' (BPM (beats per minute))                     '111.640'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rockabilly'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Young Blood'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '141666'
'TPE1' (Lead performer(s)/Soloist(s))               'The Coasters'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '077'
'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:lastfmtags'                                   ['rock and roll', '60s', 'soul', 'oldies', 'rockabilly']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                        '+0.74 dB'
'TXXX:replaygain_track_peak'                        '0.514892'

========================== row from database ==========================
                                              'id'  1427530
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-077 - The Coasters - Young Blood.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  141
                                           'genre'  rock-pop-early-rockabilly
                                        'filesize'  5668203
                                           'mtime'  1622659471
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 077 rock pop early rockabilly
                                      'tag_artist'  The Coasters
                                     'tag_release'  The Very Best of the Coasters
                                       'tag_title'  Young Blood
                                             'bpm'  111.64
                                    'search_title'  'blood':2 'young':1
                                   'search_artist'  'coasters':2 'the':1
                                  'search_release'  'best':3 'coasters':5 'of':4 'the':1 'very':2
                                     'search_rest'  '00oldiepop':5 '1957':6 'country':4 'early':9 'exotica':2 'jazz':1 'oldies':3 'pop':8 'rock':7 'rockabilly':10
                                    'search_combo'  '00oldiepop':14 '1957':15 'best':7C 'blood':2A 'coasters':4B,9C 'country':13 'early':18 'exotica':11 'jazz':10 'of':8C 'oldies':12 'pop':17 'rock':16 'rockabilly':19 'the':3B,5C 'very':6C 'young':1A
                                    'tag_tracknum'  77
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', '60s', 'soul', 'oldies', 'rockabilly']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659470.6936765  (2021-06-02 20:44:30)
                             'size'  5668203