======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '721'
                                          'artist'  'Trace'
                                     'text_people'  ''
                                         'release'  'progsoup 14'
                                           'title'  'Progression'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['symphonic prog', 'drum and bass', 'netherlands', 'progressive rock', "
 "'dutch']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '55'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '138.892'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:@\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'@\x12\x00\x00')
'PRIV:PeakValue:\x89p\x00\x00'                      PRIV(owner='PeakValue', data=b'\x89p\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')
'TALB' (Album/Movie/Show title)                     'progsoup 14'
'TBPM' (BPM (beats per minute))                     '138.892'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         'Progression'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Trace'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '55'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['symphonic prog', 'drum and bass', 'netherlands', 'progressive rock', 'dutch']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.56 dB'
'TXXX:replaygain_track_peak'                        '0.522785'

========================== row from database ==========================
                                              'id'  1414308
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 14/829 trace - Progression.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  721
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  17325438
                                           'mtime'  1620736490
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP 829 trace rock cppex progressive;set pl progspace
                                      'tag_artist'  Trace
                                     'tag_release'  progsoup 14
                                       'tag_title'  Progression
                                             'bpm'  138.892
                                    'search_title'  'progression':1
                                   'search_artist'  'trace':1
                                  'search_release'  'progsoup':1
                                     'search_rest'  '829':3 'classicprogpsy':1 'cppex':6 'pl':11 'progressive':7,9 'progsoup':2 'progspace':12 'rock':5 'set':8,10 'trace':4
                                    'search_combo'  '829':6 'classicprogpsy':4 'cppex':9 'pl':14 'progression':1A 'progressive':10,12 'progsoup':3C,5 'progspace':15 'rock':8 'set':11,13 'trace':2B,7
                                    'tag_tracknum'  55
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['symphonic prog', 'drum and bass', 'netherlands', 'progressive rock', 'dutch']
                                        'tag_date'  1974
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736489.838444  (2021-05-11 14:34:49)
                             'size'  17325438