======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '153'
                                          'artist'  'The Chesterfields'
                                     'text_people'  ''
                                         'release'  'Out of the Bronx, Vol. 1: Doo-Wop Cousins & West Side'
                                           'title'  'Meet Me at the Candystore'
                                           'quals'  ("['Q-JZFKS-1', 'Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'q-syn-1', "
 "'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-2', "
 "'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['indie pop', 'twee', 'c86', '80s', '1987']"
                                     'discogstags'  "['rock & roll', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '137.106'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:Amadeus II 3.5:pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA'  PRIV(owner='Amadeus II 3.5', data=b'pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA')
'PRIV:AverageLevel:{\x16\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x16\x00\x00')
'PRIV:PeakValue:¡z\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1z\x00\x00')
'TALB' (Album/Movie/Show title)                     'Out of the Bronx, Vol. 1: Doo-Wop Cousins & West Side'
'TBPM' (BPM (beats per minute))                     '137.106'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'Meet Me at the Candystore'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Chesterfields'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock & roll', 'rock']
'TXXX:lastfmtags'                                   ['indie pop', 'twee', 'c86', '80s', '1987']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.60 dB'
'TXXX:replaygain_track_peak'                        '0.338166'

========================== row from database ==========================
                                              'id'  736089
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/The Chesterfields - Meet Me At The Candy Store.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  153
                                           'genre'  set-th-candy
                                        'filesize'  3698275
                                           'mtime'  1620343127
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets At Store set candy
                                      'tag_artist'  The Chesterfields
                                     'tag_release'  Out of the Bronx, Vol. 1: Doo-Wop Cousins & West Side
                                       'tag_title'  Meet Me at the Candystore
                                             'bpm'  137.106
                                    'search_title'  'at':3 'candystore':5 'me':2 'meet':1 'the':4
                                   'search_artist'  'chesterfields':2 'the':1
                                  'search_release'  '1':8,9 'bronx':4,5 'cousins':13 'doo':10 'doowop':12 'of':2 'out':1 'side':15 'the':3 'vol':6,7 'west':14 'wop':11
                                     'search_rest'  'at':6 'candy':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':8 'store':7 'sweets':5
                                    'search_combo'  '1':15C,16C 'at':3A,28 'bronx':11C,12C 'candy':31 'candystore':5A 'chesterfields':7B 'country':26 'cousins':20C 'doo':17C 'doowop':19C 'exotica':24 'jazz':23 'me':2A 'meet':1A 'of':9C 'oldies':25 'out':8C 'set':30 'side':22C 'store':29 'sweets':27 'the':4A,6B,10C 'vol':13C,14C 'west':21C 'wop':18C
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie pop', 'twee', 'c86', '80s', '1987']
                                        'tag_date'  
                                     'discogstags'  ['rock & roll', 'rock']

============================== file details ==============================
                                           'mtime'  1620343127.1319895  (2021-05-07 01:18:47)
                             'size'  3698275