======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '119'
                                          'artist'  'Rita Chao'
                                     'text_people'  ''
                                         'release'  'Tape No137 - Real Girls In The Garage Land (Part XXXVIII)'
                                           'title'  'Lonely Heart'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-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-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['all', 'the vitamin b12', 'pop', '60s', 'singapore']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'set-cover or covered-styled;set-cover or covered'
                                             'bpm'  '104.2'
                                             'key'  '6A'
                                        '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 No137 - Real Girls In The Garage Land (Part XXXVIII)'
'TBPM' (BPM (beats per minute))                     '104.2'
'TCON' (Content type, a.k.a. Genre)                 ['set-cover or covered-styled', 'set-cover or covered']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Lonely Heart'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Rita Chao'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:country'                                      'SG'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['all', 'the vitamin b12', 'pop', '60s', 'singapore']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+16.73 dB'
'TXXX:replaygain_track_peak'                        '0.049307'
'TXXX:tracknum'                                     '03'

========================== row from database ==========================
                                              'id'  501968
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT137/03 - Rita Chao - Lonely Heart (196 SG).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  119
                                           'genre'  set-cover or covered-styled;set-cover or covered
                                        'filesize'  2947349
                                           'mtime'  1620348329
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT137 03 (196 SG) set cover or covered styled;set cover or covered
                                      'tag_artist'  Rita Chao
                                     'tag_release'  Tape No137 - Real Girls In The Garage Land (Part XXXVIII)
                                       'tag_title'  Lonely Heart
                                             'bpm'  104.2
                                    'search_title'  'heart':2 'lonely':1
                                   'search_artist'  'chao':2 'rita':1
                                  'search_release'  'garage':7 'girls':4 'in':5 'land':8 'no137':2 'part':9,10 'real':3 'tape':1 'the':6 'xxxviii':11,12
                                     'search_rest'  '196':6,7 'blogspot':2 'com':3 'cover':11 'covered':13 'garagetapes':1 'garagetapesblogspotcom':4 'gt137':5 'or':12 'set':10,15,17 'sg':8,9 'styled':14,16
                                    'search_combo'  '196':22,23 'blogspot':18 'chao':4B 'com':19 'cover':27 'covered':29 'garage':11C 'garagetapes':17 'garagetapesblogspotcom':20 'girls':8C 'gt137':21 'heart':2A 'in':9C 'land':12C 'lonely':1A 'no137':6C 'or':28 'part':13C,14C 'real':7C 'rita':3B 'set':26,31,33 'sg':24,25 'styled':30,32 'tape':5C 'the':10C 'xxxviii':15C,16C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['all', 'the vitamin b12', 'pop', '60s', 'singapore']
                                        'tag_date'  1965
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620348328.5388513  (2021-05-07 02:45:28)
                             'size'  2947349