======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '162'
                                          'artist'  "The Master's Apprentices"
                                     'text_people'  ''
                                         'release'  'Tape No145 - Louie Louie (Part II)'
                                           'title'  "The Master's Apprentices"
                                           '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-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['progressive rock', 'australian', 'psychedelic', 'rock', '60s']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '84.0'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'http://garagetapes.blogspot.gr/'
'TALB' (Album/Movie/Show title)                     'Tape No145 - Louie Louie (Part II)'
'TBPM' (BPM (beats per minute))                     '84.0'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         "The Master's Apprentices"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               "The Master's Apprentices"
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['progressive rock', 'australian', 'psychedelic', 'rock', '60s']
'TXXX:other'                                        'AU'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+24.25 dB'
'TXXX:replaygain_track_peak'                        '0.024603'
'TXXX:tracknum'                                     '09'

========================== row from database ==========================
                                              'id'  1517967
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT145/09 - The Master_s Apprentices (1966 AU).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  162
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  3977010
                                           'mtime'  1620384732
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT145 09 Master_s (1966 AU) rock gr garage;set pl garagetapes
                                      'tag_artist'  The Master's Apprentices
                                     'tag_release'  Tape No145 - Louie Louie (Part II)
                                       'tag_title'  The Master's Apprentices
                                             'bpm'  84.0
                                    'search_title'  'apprentices':5 'master':2 'masters':4 's':3 'the':1
                                   'search_artist'  'apprentices':5 'master':2 'masters':4 's':3 'the':1
                                  'search_release'  'ii':6,7 'louie':3 'no145':2 'part':4,5 'tape':1
                                     'search_rest'  '1966':8,9 'au':10,11 'blogspot':2 'com':3 'garage':14,16 'garagetapes':1,19 'garagetapesblogspotcom':4 'gr':13 'gt145':5 'master':6 'pl':18 'rock':12 's':7 'set':15,17
                                    'search_combo'  '1966':25,26 'apprentices':5A,10B 'au':27,28 'blogspot':19 'com':20 'garage':31,33 'garagetapes':18,36 'garagetapesblogspotcom':21 'gr':30 'gt145':22 'ii':16C,17C 'louie':13C 'master':2A,7B,23 'masters':4A,9B 'no145':12C 'part':14C,15C 'pl':35 'rock':29 's':3A,8B,24 'set':32,34 'tape':11C 'the':1A,6B
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  8A
                                           '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-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['progressive rock', 'australian', 'psychedelic', 'rock', '60s']
                                        'tag_date'  1966
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620384732.2425606  (2021-05-07 12:52:12)
                             'size'  3977010