======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '186'
                                          'artist'  'Dust'
                                     'text_people'  ''
                                         'release'  'Tape No134 - And Her Name Is G-L-O-R-I-A (Part VI)'
                                           'title'  'Bertha'
                                           '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-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hard rock', 'classic rock', 'stoner rock', 'rock', 'heavy metal']"
                                     'discogstags'  "['downtempo']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes;set-cover or covered'
                                             'bpm'  '127.4'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Tape No134 - And Her Name Is G-L-O-R-I-A (Part VI)'
'TBPM' (BPM (beats per minute))                     '127.4'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes', 'set-cover or covered']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Bertha'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Dust'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'http://garagetapes.blogspot.gr/'
'TRCK' (Track number/Position in set)               '17'
'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'                                  'downtempo'
'TXXX:lastfmtags'                                   ['hard rock', 'classic rock', 'stoner rock', 'rock', 'heavy metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+25.45 dB'
'TXXX:replaygain_track_peak'                        '0.039256'
'TXXX:tracknum'                                     '17'

========================== row from database ==========================
                                              'id'  500791
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT134/17 - Dust - Bertha (196 US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  186
                                           'genre'  rock-gr-garage;set-pl-garagetapes;set-cover or covered
                                        'filesize'  4555879
                                           'mtime'  1620384636
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT134 17 (196 US) rock gr garage;set pl garagetapes;set cover or covered
                                      'tag_artist'  Dust
                                     'tag_release'  Tape No134 - And Her Name Is G-L-O-R-I-A (Part VI)
                                       'tag_title'  Bertha
                                             'bpm'  127.4
                                    'search_title'  'bertha':1
                                   'search_artist'  'dust':1
                                  'search_release'  'a':12 'and':3 'g':7 'gloria':13 'her':4 'i':11 'is':6 'l':8 'name':5 'no134':2 'o':9 'part':14,15 'r':10 'tape':1 'vi':16,17
                                     'search_rest'  '196':6,7 'blogspot':2 'com':3 'cover':21 'covered':23 'garage':12,14 'garagetapes':1,17,19 'garagetapesblogspotcom':4 'gr':11 'gt134':5 'or':22 'pl':16 'rock':10 'set':13,15,18,20 'us':8,9
                                    'search_combo'  '196':25,26 'a':14C 'and':5C 'bertha':1A 'blogspot':21 'com':22 'cover':40 'covered':42 'dust':2B 'g':9C 'garage':31,33 'garagetapes':20,36,38 'garagetapesblogspotcom':23 'gloria':15C 'gr':30 'gt134':24 'her':6C 'i':13C 'is':8C 'l':10C 'name':7C 'no134':4C 'o':11C 'or':41 'part':16C,17C 'pl':35 'r':12C 'rock':29 'set':32,34,37,39 'tape':3C 'us':27,28 'vi':18C,19C
                                    'tag_tracknum'  17
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['hard rock', 'classic rock', 'stoner rock', 'rock', 'heavy metal']
                                        'tag_date'  1965
                                     'discogstags'  ['downtempo']

============================== file details ==============================
                                           'mtime'  1620384636.3885076  (2021-05-07 12:50:36)
                             'size'  4555879