======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '172'
                                          'artist'  'The Savages'
                                     'text_people'  ''
                                         'release'  'Tape No037 - Witch Girl'
                                           'title'  "The World Ain't Round, It's Square"
                                           '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-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['savages', 'garage rock', 'all', '60s', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '145.6'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tape No037 - Witch Girl'
'TBPM' (BPM (beats per minute))                     '145.6'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         "The World Ain't Round, It's Square"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Savages'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '11'
'TXXX:COUNTRY'                                      '- US'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['savages', 'garage rock', 'all', '60s', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+17.27 dB'
'TXXX:replaygain_track_peak'                        '0.050816'
'TXXX:tracknum'                                     '11'

========================== row from database ==========================
                                              'id'  1505499
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT037/11 - The Savages - The World Ain_t Round, It_s Square (1966 - US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  172
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  4134706
                                           'mtime'  1620383047
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT037 11 Ain_t It_s (1966 US) rock gr garage;set pl garagetapes
                                      'tag_artist'  The Savages
                                     'tag_release'  Tape No037 - Witch Girl
                                       'tag_title'  The World Ain't Round, It's Square
                                             'bpm'  145.6
                                    'search_title'  'ain':3 'aint':5 'it':8 'its':10 'round':6,7 's':9 'square':11 't':4 'the':1 'world':2
                                   'search_artist'  'savages':2 'the':1
                                  'search_release'  'girl':4 'no037':2 'tape':1 'witch':3
                                     'search_rest'  '1966':10,11 'ain':6 'blogspot':2 'com':3 'garage':16,18 'garagetapes':1,21 'garagetapesblogspotcom':4 'gr':15 'gt037':5 'it':8 'pl':20 'rock':14 's':9 'set':17,19 't':7 'us':12,13
                                    'search_combo'  '1966':27,28 'ain':3A,23 'aint':5A 'blogspot':19 'com':20 'garage':33,35 'garagetapes':18,38 'garagetapesblogspotcom':21 'girl':17C 'gr':32 'gt037':22 'it':8A,25 'its':10A 'no037':15C 'pl':37 'rock':31 'round':6A,7A 's':9A,26 'savages':13B 'set':34,36 'square':11A 't':4A,24 'tape':14C 'the':1A,12B 'us':29,30 'witch':16C 'world':2A
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  3A
                                           '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-2', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['savages', 'garage rock', 'all', '60s', 'rock']
                                        'tag_date'  1966
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620383047.3983817  (2021-05-07 12:24:07)
                             'size'  4134706