======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '152'
                                          'artist'  'The Napoleonic Wars'
                                     'text_people'  ''
                                         'release'  'Tape No132 - Covering The Who (Part II)'
                                           'title'  "I Can't Explain It"
                                           '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-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['garage rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '142.8'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Tape No132 - Covering The Who (Part II)'
'TBPM' (BPM (beats per minute))                     '142.8'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         "I Can't Explain It"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Napoleonic Wars'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'http://garagetapes.blogspot.gr/'
'TRCK' (Track number/Position in set)               '10'
'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'                                  ['garage rock', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+6.22 dB'
'TXXX:replaygain_track_peak'                        '0.280549'
'TXXX:tracknum'                                     '10'

========================== row from database ==========================
                                              'id'  1505380
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT132/10 - The Napoleonic Wars - I Can_t Explain It (1966 US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  152
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  3718619
                                           'mtime'  1620384619
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT132 10 Can_t (1966 US) rock gr garage;set garagetapes
                                      'tag_artist'  The Napoleonic Wars
                                     'tag_release'  Tape No132 - Covering The Who (Part II)
                                       'tag_title'  I Can't Explain It
                                             'bpm'  142.8
                                    'search_title'  'can':2 'cant':4 'explain':5 'i':1 'it':6 't':3
                                   'search_artist'  'napoleonic':2 'the':1 'wars':3
                                  'search_release'  'covering':3 'ii':8,9 'no132':2 'part':6,7 'tape':1 'the':4 'who':5
                                     'search_rest'  '1966':8,9 'blogspot':2 'can':6 'com':3 'garage':14,16 'garagetapes':1,18 'garagetapesblogspotcom':4 'gr':13 'gt132':5 'rock':12 'set':15,17 't':7 'us':10,11
                                    'search_combo'  '1966':26,27 'blogspot':20 'can':2A,24 'cant':4A 'com':21 'covering':12C 'explain':5A 'garage':32,34 'garagetapes':19,36 'garagetapesblogspotcom':22 'gr':31 'gt132':23 'i':1A 'ii':17C,18C 'it':6A 'napoleonic':8B 'no132':11C 'part':15C,16C 'rock':30 'set':33,35 't':3A,25 'tape':10C 'the':7B,13C 'us':28,29 'wars':9B 'who':14C
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  12B
                                           '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-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1966
                                     'discogstags'  ['garage rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620384618.7320964  (2021-05-07 12:50:18)
                             'size'  3718619