======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '195'
                                          'artist'  "Short '66"
                                     'text_people'  ''
                                         'release'  'Tape No087 - Covering The Who (Part I)'
                                           'title'  'Substitute'
                                           '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-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['psychedelic', 'rubble', 'dutch beat']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '139.4'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'http://garagetapes.blogspot.com/'
'TALB' (Album/Movie/Show title)                     'Tape No087 - Covering The Who (Part I)'
'TBPM' (BPM (beats per minute))                     '139.4'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         'Substitute'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               "Short '66"
'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'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:country'                                      'NL'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['psychedelic', 'rubble', 'dutch beat']
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+24.47 dB'
'TXXX:replaygain_track_peak'                        '0.026004'
'TXXX:tracknum'                                     '02'

========================== row from database ==========================
                                              'id'  1503286
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT087/02 - Short _66 - Substitute (1966 NL).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  195
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  4697906
                                           'mtime'  1620383761
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT087 02 _66 (1966 NL) rock gr garage;set pl garagetapes
                                      'tag_artist'  Short '66
                                     'tag_release'  Tape No087 - Covering The Who (Part I)
                                       'tag_title'  Substitute
                                             'bpm'  139.4
                                    'search_title'  'substitute':1
                                   'search_artist'  '66':2,3 'short':1
                                  'search_release'  'covering':3 'i':8,9 'no087':2 'part':6,7 'tape':1 'the':4 'who':5
                                     'search_rest'  '1966':7,8 '66':6 'blogspot':2 'com':3 'garage':13,15 'garagetapes':1,18 'garagetapesblogspotcom':4 'gr':12 'gt087':5 'nl':9,10 'pl':17 'rock':11 'set':14,16
                                    'search_combo'  '1966':20,21 '66':3B,4B,19 'blogspot':15 'com':16 'covering':7C 'garage':26,28 'garagetapes':14,31 'garagetapesblogspotcom':17 'gr':25 'gt087':18 'i':12C,13C 'nl':22,23 'no087':6C 'part':10C,11C 'pl':30 'rock':24 'set':27,29 'short':2B 'substitute':1A 'tape':5C 'the':8C 'who':9C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           '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-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['psychedelic', 'rubble', 'dutch beat']
                                        'tag_date'  1966
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620383760.7964866  (2021-05-07 12:36:00)
                             'size'  4697906