======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '171'
                                          'artist'  'Gray Ghost'
                                     'text_people'  ''
                                         'release'  'Tape No184 - Free Your Mind'
                                           'title'  'Black Sunshine'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hardcore', 'sludge', 'experimental', 'sludge metal']"
                                     'discogstags'  "['hardcore', 'doom metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '143.7'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'http://garagetapes.blogspot.gr/'
'TALB' (Album/Movie/Show title)                     'Tape No184 - Free Your Mind'
'TBPM' (BPM (beats per minute))                     '143.7'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Black Sunshine'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Gray Ghost'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:country'                                      'US'
'TXXX:discogstags'                                  ['hardcore', 'doom metal', 'rock']
'TXXX:lastfmtags'                                   ['hardcore', 'sludge', 'experimental', 'sludge metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+23.68 dB'
'TXXX:replaygain_track_peak'                        '0.027243'
'TXXX:tracknum'                                     '16'

========================== row from database ==========================
                                              'id'  501329
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT184/16 - Gray Ghost - Black Sunshine (1971 US) (Pirate).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  171
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  4177598
                                           'mtime'  1620385074
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT184 16 (1971 US) (Pirate) rock gr garage;set pl garagetapes
                                      'tag_artist'  Gray Ghost
                                     'tag_release'  Tape No184 - Free Your Mind
                                       'tag_title'  Black Sunshine
                                             'bpm'  143.7
                                    'search_title'  'black':1 'sunshine':2
                                   'search_artist'  'ghost':2 'gray':1
                                  'search_release'  'free':3 'mind':5 'no184':2 'tape':1 'your':4
                                     'search_rest'  '1971':6,7 'blogspot':2 'com':3 'garage':14,16 'garagetapes':1,19 'garagetapesblogspotcom':4 'gr':13 'gt184':5 'pirate':10,11 'pl':18 'rock':12 'set':15,17 'us':8,9
                                    'search_combo'  '1971':15,16 'black':1A 'blogspot':11 'com':12 'free':7C 'garage':23,25 'garagetapes':10,28 'garagetapesblogspotcom':13 'ghost':4B 'gr':22 'gray':3B 'gt184':14 'mind':9C 'no184':6C 'pirate':19,20 'pl':27 'rock':21 'set':24,26 'sunshine':2A 'tape':5C 'us':17,18 'your':8C
                                    'tag_tracknum'  16
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['hardcore', 'sludge', 'experimental', 'sludge metal']
                                        'tag_date'  1971
                                     'discogstags'  ['hardcore', 'doom metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620385074.4842656  (2021-05-07 12:57:54)
                             'size'  4177598