======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '198'
                                          'artist'  'Peggy Lee'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Fever'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', '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-3', 'q-drums-2', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'female vocalists', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing;prerock-jb-jazz-vocal;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '138.417'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:P\x0b\x00\x00'                   PRIV(owner='AverageLevel', data=b'P\x0b\x00\x00')
'PRIV:PeakValue:{Z\x00\x00'                         PRIV(owner='PeakValue', data=b'{Z\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')
'TBPM' (BPM (beats per minute))                     '138.417'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-soft-swing',
 'prerock-jb-jazz-vocal',
 'set-pl-shirleyspinoza',
 'set-pl-mor']
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         'Fever'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Peggy Lee'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'jazz', 'female vocalists', 'oldies', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.12 dB'
'TXXX:replaygain_track_peak'                        '0.594446'

========================== row from database ==========================
                                              'id'  786338
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Lee, Peggy/Peggy Lee - Fever.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  198
                                           'genre'  prerock-jb-jazz-soft-swing;prerock-jb-jazz-vocal;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  4762720
                                           'mtime'  1620531333
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Lee, prerock jb jazz soft swing;prerock jb jazz vocal;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Peggy Lee
                                     'tag_release'  None
                                       'tag_title'  Fever
                                             'bpm'  138.417
                                    'search_title'  'fever':1
                                   'search_artist'  'lee':2 'peggy':1
                                  'search_release'  
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':8 'lee':5,6 'mor':23 'oldies':3 'pl':18 'prerock':7,11,13 'set':15,17,20,22 'shirleyspinoza':19,21 'soft':9 'swing':10,12 'vocal':14,16
                                    'search_combo'  'country':7 'exotica':5 'fever':1A 'jazz':4 'jb':11 'lee':3B,8,9 'mor':26 'oldies':6 'peggy':2B 'pl':21 'prerock':10,14,16 'set':18,20,23,25 'shirleyspinoza':22,24 'soft':12 'swing':13,15 'vocal':17,19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'jazz', 'female vocalists', 'oldies', 'swing']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620531332.5576885  (2021-05-09 05:35:32)
                             'size'  4762720