======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '157'
                                          'artist'  'Chuck Willis'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'C.C. Rider'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'rhythm and blues', '50s', 'oldies', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '108'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '91.639'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'1\x006\x00+\x009\x006\x00+\x003\x00E\x00B\x001\x00+\x007\x00D\x00C\x000\x00+\x00C\x001\x008\x000\x00+\x00F\x00D\x002\x009\x00+\x001\x005\x009\x007\x00E\x00+\x001\x00B\x001\x007\x001\x00+\x001\x00D\x00F\x00A\x002\x00+\x002\x000\x00B\x00F\x001\x00+\x002\x003\x005\x007\x001\x00+\x002\x006\x001\x001\x00A\x00+\x002\x009\x002\x00D\x00E\x00+\x002\x00C\x003\x009\x002\x00+\x003\x001\x002\x00C\x00D\x00+\x003\x006\x003\x00A\x005\x00+\x003\x009\x006\x00D\x00A\x00+\x003\x00C\x00B\x003\x002\x00+\x004\x000\x00C\x000\x00C\x00+\x004\x005\x005\x009\x000\x00+\x004\x009\x00B\x00E\x00C\x00+\x004\x00C\x00F\x007\x00D\x00+\x004\x00F\x00C\x00B\x00F\x00+\x005\x003\x001\x00C\x005\x00\x00\x00')
'PRIV:AverageLevel:\x12\x13\x00\x00'                PRIV(owner='AverageLevel', data=b'\x12\x13\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'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')
'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '91.639'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'C.C. Rider'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '157666'
'TPE1' (Lead performer(s)/Soloist(s))               'Chuck Willis'
'TRCK' (Track number/Position in set)               '108'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'rhythm and blues', '50s', 'oldies', 'soul']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+3.32 dB'
'TXXX:replaygain_track_peak'                        '0.356018'

========================== row from database ==========================
                                              'id'  1437529
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-108 - Chuck Willis - C.C. Rider.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  157
                                           'genre'  prerock-unsorted
                                        'filesize'  6294825
                                           'mtime'  1620387691
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 108 prerock unsorted
                                      'tag_artist'  Chuck Willis
                                     'tag_release'  None
                                       'tag_title'  C.C. Rider
                                             'bpm'  91.639
                                    'search_title'  'c':1,2 'cc':3 'rider':4
                                   'search_artist'  'chuck':1 'willis':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '108':7 '1957':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':11 '108':13 '1957':12 'c':1A,2A 'cc':3A 'chuck':5B 'country':10 'exotica':8 'jazz':7 'oldies':9 'prerock':14 'rider':4A 'unsorted':15 'willis':6B
                                    'tag_tracknum'  108
                                      '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['blues', 'rhythm and blues', '50s', 'oldies', 'soul']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387690.663724  (2021-05-07 13:41:30)
                             'size'  6294825