======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '173'
                                          'artist'  'The Ambertones'
                                     'text_people'  ''
                                         'release'  'Tape No123 - I Can Only Give You Everything'
                                           'title'  'I Can Only Give You Everything'
                                           '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['garage', 'instro']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes;set-cover or covered'
                                             'bpm'  '123.2'
                                             'key'  '9B'
                                        '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 No123 - I Can Only Give You Everything'
'TBPM' (BPM (beats per minute))                     '123.2'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes', 'set-cover or covered']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         'I Can Only Give You Everything'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Ambertones'
'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'                                   ['garage', 'instro']
'TXXX:other'                                        'US'
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+26.23 dB'
'TXXX:replaygain_track_peak'                        '0.026518'
'TXXX:tracknum'                                     '09'

========================== row from database ==========================
                                              'id'  502139
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT123/09 - The Ambertones (1966 US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  173
                                           'genre'  rock-gr-garage;set-pl-garagetapes;set-cover or covered
                                        'filesize'  4233688
                                           'mtime'  1620384529
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT123 09 (1966 US) rock gr garage;set pl garagetapes;set cover or covered
                                      'tag_artist'  The Ambertones
                                     'tag_release'  Tape No123 - I Can Only Give You Everything
                                       'tag_title'  I Can Only Give You Everything
                                             'bpm'  123.2
                                    'search_title'  'can':2 'everything':6 'give':4 'i':1 'only':3 'you':5
                                   'search_artist'  'ambertones':2 'the':1
                                  'search_release'  'can':4 'everything':8 'give':6 'i':3 'no123':2 'only':5 'tape':1 'you':7
                                     'search_rest'  '1966':6,7 'blogspot':2 'com':3 'cover':21 'covered':23 'garage':12,14 'garagetapes':1,17,19 'garagetapesblogspotcom':4 'gr':11 'gt123':5 'or':22 'pl':16 'rock':10 'set':13,15,18,20 'us':8,9
                                    'search_combo'  '1966':22,23 'ambertones':8B 'blogspot':18 'can':2A,12C 'com':19 'cover':37 'covered':39 'everything':6A,16C 'garage':28,30 'garagetapes':17,33,35 'garagetapesblogspotcom':20 'give':4A,14C 'gr':27 'gt123':21 'i':1A,11C 'no123':10C 'only':3A,13C 'or':38 'pl':32 'rock':26 'set':29,31,34,36 'tape':9C 'the':7B 'us':24,25 'you':5A,15C
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-grit-2']
                                      'lastfmtags'  ['garage', 'instro']
                                        'tag_date'  1966
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620384528.8747053  (2021-05-07 12:48:48)
                             'size'  4233688