======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '174'
                                          'artist'  'The Four Lads'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "There's Only One Of You"
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal', 'pop', '50s', 'oldies', 'canadian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '119.054'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:AverageLevel:{\r\x00\x00'                     PRIV(owner='AverageLevel', data=b'{\r\x00\x00')
'PRIV:PeakValue:¡v\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1v\x00\x00')
'TBPM' (BPM (beats per minute))                     '119.054'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         "There's Only One Of You"
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Four Lads'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['vocal', 'pop', '50s', 'oldies', 'canadian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.82 dB'
'TXXX:replaygain_track_peak'                        '0.462646'

========================== row from database ==========================
                                              'id'  1515928
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/The Four Lads - There_s Only One Of You.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  174
                                           'genre'  set-th-candy
                                        'filesize'  4202078
                                           'mtime'  1620343129
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets There_s set th candy
                                      'tag_artist'  The Four Lads
                                     'tag_release'  None
                                       'tag_title'  There's Only One Of You
                                             'bpm'  119.054
                                    'search_title'  'of':6 'one':5 'only':4 's':2 'there':1 'theres':3 'you':7
                                   'search_artist'  'four':2 'lads':3 'the':1
                                  'search_release'  
                                     'search_rest'  'candy':10 'country':4 'exotica':2 'jazz':1 'oldies':3 's':7 'set':8 'sweets':5 'th':9 'there':6
                                    'search_combo'  'candy':20 'country':14 'exotica':12 'four':9B 'jazz':11 'lads':10B 'of':6A 'oldies':13 'one':5A 'only':4A 's':2A,17 'set':18 'sweets':15 'th':19 'the':8B 'there':1A,16 'theres':3A 'you':7A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           '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-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['vocal', 'pop', '50s', 'oldies', 'canadian']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343128.6045923  (2021-05-07 01:18:48)
                             'size'  4202078