======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '152'
                                          'artist'  'Los Grecos'
                                     'text_people'  ''
                                         'release'  ("Tape No238 - I'm Going To Change The World (Covering The Sounds Of Eric "
 'Burdon And The Animals, Part VIII)')
                                           'title'  'Si Si'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['latin']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '92.2'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     ("Tape No238 - I'm Going To Change The World (Covering The Sounds Of Eric "
 'Burdon And The Animals, Part VIII)')
'TBPM' (BPM (beats per minute))                     '92.2'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1967'
'TIT2' (Title/songname/content description)         'Si Si'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Los Grecos'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '01'
'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'                                      'MX'
'TXXX:discogstags'                                  'latin'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.05 dB'
'TXXX:replaygain_track_peak'                        '0.415445'
'TXXX:tracknum'                                     '01'

========================== row from database ==========================
                                              'id'  500432
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT238/01 - Los Grecos - Si Si (1967 MX).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  152
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  3749972
                                           'mtime'  1620385453
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT238 01 (1967 MX) rock gr garage;set pl garagetapes
                                      'tag_artist'  Los Grecos
                                     'tag_release'  Tape No238 - I'm Going To Change The World (Covering The Sounds Of Eric Burdon And The Animals, Part VIII)
                                       'tag_title'  Si Si
                                             'bpm'  92.2
                                    'search_title'  'si':1
                                   'search_artist'  'grecos':2 'los':1
                                  'search_release'  'and':17 'animals':18,19 'burdon':16 'change':8 'covering':11,12 'eric':15 'going':6 'i':3 'im':5 'm':4 'no238':2 'of':14 'part':20 'sounds':13 'tape':1 'the':9 'to':7 'viii':21,22 'world':10
                                     'search_rest'  '1967':6,7 'blogspot':2 'com':3 'garage':12,14 'garagetapes':1,17 'garagetapesblogspotcom':4 'gr':11 'gt238':5 'mx':8,9 'pl':16 'rock':10 'set':13,15
                                    'search_combo'  '1967':31,32 'and':20C 'animals':21C,22C 'blogspot':27 'burdon':19C 'change':11C 'com':28 'covering':14C,15C 'eric':18C 'garage':37,39 'garagetapes':26,42 'garagetapesblogspotcom':29 'going':9C 'gr':36 'grecos':3B 'gt238':30 'i':6C 'im':8C 'los':2B 'm':7C 'mx':33,34 'no238':5C 'of':17C 'part':23C 'pl':41 'rock':35 'set':38,40 'si':1A 'sounds':16C 'tape':4C 'the':12C 'to':10C 'viii':24C,25C 'world':13C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  11A
                                           '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-3', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1967
                                     'discogstags'  ['latin']

============================== file details ==============================
                                           'mtime'  1620385453.1409674  (2021-05-07 13:04:13)
                             'size'  3749972