======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '172'
                                          'artist'  'Nevermore'
                                     'text_people'  ''
                                         'release'  'Tape No251 - Garage & Psych Duets (Part IV)'
                                           'title'  'Time Goes On'
                                           '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'  ("['power metal', 'metal', 'thrash metal', 'progressive metal', 'heavy metal', "
 "'progressive thrash metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '128.7'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Tape No251 - Garage & Psych Duets (Part IV)'
'TBPM' (BPM (beats per minute))                     '128.7'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         'Time Goes On'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nevermore'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '09'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['power metal',
 'metal',
 'thrash metal',
 'progressive metal',
 'heavy metal',
 'progressive thrash 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'                        '+23.50 dB'
'TXXX:replaygain_track_peak'                        '0.043280'
'TXXX:tracknum'                                     '09'

========================== row from database ==========================
                                              'id'  507644
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT251/09 - Nevermore - Time Goes On (1972 US) (Triple G).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  172
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  4183418
                                           'mtime'  1620385524
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT251 09 (1972 US) (Triple G) rock gr garage;set pl garagetapes
                                      'tag_artist'  Nevermore
                                     'tag_release'  Tape No251 - Garage & Psych Duets (Part IV)
                                       'tag_title'  Time Goes On
                                             'bpm'  128.7
                                    'search_title'  'goes':2 'on':3 'time':1
                                   'search_artist'  'nevermore':1
                                  'search_release'  'duets':5 'garage':3 'iv':8,9 'no251':2 'part':6,7 'psych':4 'tape':1
                                     'search_rest'  '1972':6,7 'blogspot':2 'com':3 'g':12,13 'garage':16,18 'garagetapes':1,21 'garagetapesblogspotcom':4 'gr':15 'gt251':5 'pl':20 'rock':14 'set':17,19 'triple':10,11 'us':8,9
                                    'search_combo'  '1972':19,20 'blogspot':15 'com':16 'duets':9C 'g':25,26 'garage':7C,29,31 'garagetapes':14,34 'garagetapesblogspotcom':17 'goes':2A 'gr':28 'gt251':18 'iv':12C,13C 'nevermore':4B 'no251':6C 'on':3A 'part':10C,11C 'pl':33 'psych':8C 'rock':27 'set':30,32 'tape':5C 'time':1A 'triple':23,24 'us':21,22
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  10B
                                           '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'  ['power metal', 'metal', 'thrash metal', 'progressive metal', 'heavy metal', 'progressive thrash metal']
                                        'tag_date'  1972
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620385524.123011  (2021-05-07 13:05:24)
                             'size'  4183418