======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '164'
                                          'artist'  '4PK'
                                     'text_people'  ''
                                         'release'  'Tape No106 - Play With Fire (Covering The Rolling Stones, Part III)'
                                           'title'  'As Tears Go By'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['freakbeat', 'dutch', 'netherlands', 'nederland', 'eindhoven']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '114.8'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tape No106 - Play With Fire (Covering The Rolling Stones, Part III)'
'TBPM' (BPM (beats per minute))                     '114.8'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TENC' (Encoded by)                                 'http://garagetapes.blogspot.com/'
'TIT2' (Title/songname/content description)         'As Tears Go By'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               '4PK'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '02'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:country'                                      'NL'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['freakbeat', 'dutch', 'netherlands', 'nederland', 'eindhoven']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                        '+24.29 dB'
'TXXX:replaygain_track_peak'                        '0.043238'
'TXXX:tracknum'                                     '02'

========================== row from database ==========================
                                              'id'  504150
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT106/02 - 4PK - As Tears Go By (1966 NL).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  164
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  3946496
                                           'mtime'  1620384235
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT106 02 (1966 NL) rock gr garage;set pl garagetapes
                                      'tag_artist'  4PK
                                     'tag_release'  Tape No106 - Play With Fire (Covering The Rolling Stones, Part III)
                                       'tag_title'  As Tears Go By
                                             'bpm'  114.8
                                    'search_title'  'as':1 'by':4 'go':3 'tears':2
                                   'search_artist'  '4pk':1
                                  'search_release'  'covering':6,7 'fire':5 'iii':13,14 'no106':2 'part':12 'play':3 'rolling':9 'stones':10,11 'tape':1 'the':8 'with':4
                                     'search_rest'  '1966':6,7 'blogspot':2 'com':3 'garage':12,14 'garagetapes':1,17 'garagetapesblogspotcom':4 'gr':11 'gt106':5 'nl':8,9 'pl':16 'rock':10 'set':13,15
                                    'search_combo'  '1966':25,26 '4pk':5B 'as':1A 'blogspot':21 'by':4A 'com':22 'covering':11C,12C 'fire':10C 'garage':31,33 'garagetapes':20,36 'garagetapesblogspotcom':23 'go':3A 'gr':30 'gt106':24 'iii':18C,19C 'nl':27,28 'no106':7C 'part':17C 'pl':35 'play':8C 'rock':29 'rolling':14C 'set':32,34 'stones':15C,16C 'tape':6C 'tears':2A 'the':13C 'with':9C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['freakbeat', 'dutch', 'netherlands', 'nederland', 'eindhoven']
                                        'tag_date'  1966
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620384235.1682408  (2021-05-07 12:43:55)
                             'size'  3946496