======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '174'
                                          'artist'  'Nat "King" Cole'
                                     'text_people'  ''
                                         'release'  'Cole, Christmas & Kids'
                                           'title'  'Take Me Back To Toyland'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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'  "['jazz', 'swing', 'oldies', 'blues', 'christmas']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '269'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '132.531'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:\x89\x11\x00\x00'                PRIV(owner='AverageLevel', data=b'\x89\x11\x00\x00')
'PRIV:PeakValue:\x9b~\x00\x00'                      PRIV(owner='PeakValue', data=b'\x9b~\x00\x00')
'TALB' (Album/Movie/Show title)                     'Cole, Christmas & Kids'
'TBPM' (BPM (beats per minute))                     '132.531'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Take Me Back To Toyland'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nat "King" Cole'
'TRCK' (Track number/Position in set)               '269'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'oldies', 'blues', 'christmas']
'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'                        '+0.99 dB'
'TXXX:replaygain_track_peak'                        '0.588145'

========================== row from database ==========================
                                              'id'  1452600
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-269 - Nat King Cole - Take Me Back To Toyland.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  174
                                           'genre'  prerock-swing
                                        'filesize'  6981054
                                           'mtime'  1620562579
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 269 prerock swing
                                      'tag_artist'  Nat "King" Cole
                                     'tag_release'  Cole, Christmas & Kids
                                       'tag_title'  Take Me Back To Toyland
                                             'bpm'  132.531
                                    'search_title'  'back':3 'me':2 'take':1 'to':4 'toyland':5
                                   'search_artist'  'cole':3 'king':2 'nat':1
                                  'search_release'  'christmas':3 'cole':1,2 'kids':4
                                     'search_rest'  '00oldiepop':5 '1956':6 '269':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'swing':9
                                    'search_combo'  '00oldiepop':17 '1956':18 '269':19 'back':3A 'christmas':11C 'cole':8B,9C,10C 'country':16 'exotica':14 'jazz':13 'kids':12C 'king':7B 'me':2A 'nat':6B 'oldies':15 'prerock':20 'swing':21 'take':1A 'to':4A 'toyland':5A
                                    'tag_tracknum'  269
                                      'num_images'  0
                                             'key'  4A
                                           '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-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'oldies', 'blues', 'christmas']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562578.5026505  (2021-05-09 14:16:18)
                             'size'  6981054