======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '159'
                                          'artist'  'Os Demonios Negros'
                                     'text_people'  ''
                                         'release'  "Tape No218 - UC176 - Shakin' All Over (Part III)"
                                           'title'  "Shakin' All Over"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes;set-cover or covered'
                                             'bpm'  '138.1'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'http://garagetapes.blogspot.gr/http://michaelvee.livejournal.com/'
'TALB' (Album/Movie/Show title)                     "Tape No218 - UC176 - Shakin' All Over (Part III)"
'TBPM' (BPM (beats per minute))                     '138.1'
'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)         "Shakin' All Over"
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Os Demonios Negros'
'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'                                      'PT'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+18.09 dB'
'TXXX:replaygain_track_peak'                        '0.058019'
'TXXX:tracknum'                                     '01'

========================== row from database ==========================
                                              'id'  1520430
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT218_UC176/01 - Os Demonios Negros - Shakin_ All Over (1965 PT).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  159
                                           'genre'  rock-gr-garage;set-pl-garagetapes;set-cover or covered
                                        'filesize'  3916247
                                           'mtime'  1620385345
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT218_UC176 01 Shakin_ (1965 PT) rock garage;set pl garagetapes;set cover or covered
                                      'tag_artist'  Os Demonios Negros
                                     'tag_release'  Tape No218 - UC176 - Shakin' All Over (Part III)
                                       'tag_title'  Shakin' All Over
                                             'bpm'  138.1
                                    'search_title'  'all':3 'over':4 'shakin':1,2
                                   'search_artist'  'demonios':2 'negros':3 'os':1
                                  'search_release'  'all':6 'iii':10,11 'no218':2 'over':7 'part':8,9 'shakin':4,5 'tape':1 'uc176':3
                                     'search_rest'  '1965':8,9 'blogspot':2 'com':3 'cover':22 'covered':24 'garage':13,15 'garagetapes':1,18,20 'garagetapesblogspotcom':4 'gt218':5 'or':23 'pl':17 'pt':10,11 'rock':12 'set':14,16,19,21 'shakin':7 'uc176':6
                                    'search_combo'  '1965':26,27 'all':3A,13C 'blogspot':20 'com':21 'cover':40 'covered':42 'demonios':6B 'garage':31,33 'garagetapes':19,36,38 'garagetapesblogspotcom':22 'gt218':23 'iii':17C,18C 'negros':7B 'no218':9C 'or':41 'os':5B 'over':4A,14C 'part':15C,16C 'pl':35 'pt':28,29 'rock':30 'set':32,34,37,39 'shakin':1A,2A,11C,12C,25 'tape':8C 'uc176':10C,24
                                    '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-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385344.8053136  (2021-05-07 13:02:24)
                             'size'  3916247