======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '161'
                                          'artist'  'Four Preps'
                                     'text_people'  ''
                                         'release'  'Best Of The Four Preps'
                                           'title'  'Lollipops And Roses'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'pop', 'doo wop', 'doo-wop', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '107.893'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:AverageLevel:{\x0b\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x0b\x00\x00')
'PRIV:PeakValue:¡f\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Best Of The Four Preps'
'TBPM' (BPM (beats per minute))                     '107.893'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Lollipops And Roses'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Four Preps'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'pop', 'doo wop', 'doo-wop', '50s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                        '+1.49 dB'
'TXXX:replaygain_track_peak'                        '0.565957'

========================== row from database ==========================
                                              'id'  736102
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Four Preps - Lollipops And Roses.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  161
                                           'genre'  set-th-candy
                                        'filesize'  2589652
                                           'mtime'  1620343113
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets set th candy
                                      'tag_artist'  Four Preps
                                     'tag_release'  Best Of The Four Preps
                                       'tag_title'  Lollipops And Roses
                                             'bpm'  107.893
                                    'search_title'  'and':2 'lollipops':1 'roses':3
                                   'search_artist'  'four':1 'preps':2
                                  'search_release'  'best':1 'four':4 'of':2 'preps':5 'the':3
                                     'search_rest'  'candy':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':6 'sweets':5 'th':7
                                    'search_combo'  'and':2A 'best':6C 'candy':18 'country':14 'exotica':12 'four':4B,9C 'jazz':11 'lollipops':1A 'of':7C 'oldies':13 'preps':5B,10C 'roses':3A 'set':16 'sweets':15 'th':17 'the':8C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  7B
                                           '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-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'pop', 'doo wop', 'doo-wop', '50s']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343112.7379453  (2021-05-07 01:18:32)
                             'size'  2589652