======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '166'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Tape No177 - Louie Louie (Part VII)'
                                           'title'  'Louie Louie'
                                           '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-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes;set-cover or covered'
                                             'bpm'  '121.7'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Tape No177 - Louie Louie (Part VII)'
'TBPM' (BPM (beats per minute))                     '121.7'
'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)         'Louie Louie'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'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:q-bass'                                       '3'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+25.25 dB'
'TXXX:replaygain_track_peak'                        '0.028862'
'TXXX:tracknum'                                     '16'

========================== row from database ==========================
                                              'id'  506814
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT177 - Louie Louie (Part VII)/16 - Unknown Band (196 US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  166
                                           'genre'  rock-gr-garage;set-pl-garagetapes;set-cover or covered
                                        'filesize'  4073468
                                           'mtime'  1620385015
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT177 16 Unknown Band (196 US) rock gr garage;set pl garagetapes;set cover or covered
                                      'tag_artist'  [unknown]
                                     'tag_release'  Tape No177 - Louie Louie (Part VII)
                                       'tag_title'  Louie Louie
                                             'bpm'  121.7
                                    'search_title'  'louie':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'louie':3 'no177':2 'part':4,5 'tape':1 'vii':6,7
                                     'search_rest'  '196':8,9 'band':7 'blogspot':2 'com':3 'cover':23 'covered':25 'garage':14,16 'garagetapes':1,19,21 'garagetapesblogspotcom':4 'gr':13 'gt177':5 'or':24 'pl':18 'rock':12 'set':15,17,20,22 'unknown':6 'us':10,11
                                    'search_combo'  '196':18,19 'band':17 'blogspot':12 'com':13 'cover':33 'covered':35 'garage':24,26 'garagetapes':11,29,31 'garagetapesblogspotcom':14 'gr':23 'gt177':15 'louie':1A,6C 'no177':5C 'or':34 'part':7C,8C 'pl':28 'rock':22 'set':25,27,30,32 'tape':4C 'unknown':2B,3B,16 'us':20,21 'vii':9C,10C
                                    'tag_tracknum'  16
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-3', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385014.861555  (2021-05-07 12:56:54)
                             'size'  4073468