======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '170'
                                          'artist'  'The Reynettes'
                                     'text_people'  ''
                                         'release'  'Tape No048 - Real Girls In The Garage Land - Part VI'
                                           'title'  'Bei Mir Bist Du Schon'
                                           '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-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  '[\'all\', \'soul\', "rock\'n\'roll"]'
                                     'discogstags'  "['funk / soul', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '130.2'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'http://garagetapes.blogspot.com/'
'TALB' (Album/Movie/Show title)                     'Tape No048 - Real Girls In The Garage Land - Part VI'
'TBPM' (BPM (beats per minute))                     '130.2'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         'Bei Mir Bist Du Schon'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Reynettes'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '09'
'TXXX:COUNTRY'                                      'HK'
'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'                                  ['funk / soul', 'pop']
'TXXX:lastfmtags'                                   ['all', 'soul', "rock'n'roll"]
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                        '+23.74 dB'
'TXXX:replaygain_track_peak'                        '0.030801'
'TXXX:tracknum'                                     '09'

========================== row from database ==========================
                                              'id'  504461
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT048/09 - The Reynettes  -  Bei Mir Bist Du Schon (1966 HK).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  170
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  4099712
                                           'mtime'  1620383160
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT048 09 (1966 HK) rock gr garage;set pl garagetapes
                                      'tag_artist'  The Reynettes
                                     'tag_release'  Tape No048 - Real Girls In The Garage Land - Part VI
                                       'tag_title'  Bei Mir Bist Du Schon
                                             'bpm'  130.2
                                    'search_title'  'bei':1 'bist':3 'du':4 'mir':2 'schon':5
                                   'search_artist'  'reynettes':2 'the':1
                                  'search_release'  'garage':7 'girls':4 'in':5 'land':8 'no048':2 'part':9 'real':3 'tape':1 'the':6 'vi':10
                                     'search_rest'  '1966':6,7 'blogspot':2 'com':3 'garage':12,14 'garagetapes':1,17 'garagetapesblogspotcom':4 'gr':11 'gt048':5 'hk':8,9 'pl':16 'rock':10 'set':13,15
                                    'search_combo'  '1966':23,24 'bei':1A 'bist':3A 'blogspot':19 'com':20 'du':4A 'garage':14C,29,31 'garagetapes':18,34 'garagetapesblogspotcom':21 'girls':11C 'gr':28 'gt048':22 'hk':25,26 'in':12C 'land':15C 'mir':2A 'no048':9C 'part':16C 'pl':33 'real':10C 'reynettes':7B 'rock':27 'schon':5A 'set':30,32 'tape':8C 'the':6B,13C 'vi':17C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             '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-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['all', 'soul', "rock'n'roll"]
                                        'tag_date'  1966
                                     'discogstags'  ['funk / soul', 'pop']

============================== file details ==============================
                                           'mtime'  1620383160.188217  (2021-05-07 12:26:00)
                             'size'  4099712