======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '141'
                                          'artist'  'The What Four'
                                     'text_people'  ''
                                         'release'  'Tape No041 - I Live In The Springtime'
                                           'title'  "Ain't No Use in Crying Susan"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', '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'  "['girl group', 'female vocalist', 'female vocalists', '60s', 'garage']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '99.5'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'http://garagetapes.blogspot.com/'
'TALB' (Album/Movie/Show title)                     'Tape No041 - I Live In The Springtime'
'TBPM' (BPM (beats per minute))                     '99.5'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         "Ain't No Use in Crying Susan"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'The What Four'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '13'
'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'                                   ['girl group', 'female vocalist', 'female vocalists', '60s', 'garage']
'TXXX:q-bass'                                       '3'
'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'                        '+23.99 dB'
'TXXX:replaygain_track_peak'                        '0.020145'
'TXXX:tracknum'                                     '13'

========================== row from database ==========================
                                              'id'  1519172
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT041 - I Live In The Springtime/13 - The What Four - Ain_t No Use in Crying Susan (1966 - US).mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  141
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  3968834
                                           'mtime'  1620383090
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT041 13 Ain_t (1966 US) rock gr garage;set pl garagetapes
                                      'tag_artist'  The What Four
                                     'tag_release'  Tape No041 - I Live In The Springtime
                                       'tag_title'  Ain't No Use in Crying Susan
                                             'bpm'  99.5
                                    'search_title'  'ain':1 'aint':3 'crying':7 'in':6 'no':4 'susan':8 't':2 'use':5
                                   'search_artist'  'four':3 'the':1 'what':2
                                  'search_release'  'i':3 'in':5 'live':4 'no041':2 'springtime':7 'tape':1 'the':6
                                     'search_rest'  '1966':8,9 'ain':6 'blogspot':2 'com':3 'garage':14,16 'garagetapes':1,19 'garagetapesblogspotcom':4 'gr':13 'gt041':5 'pl':18 'rock':12 'set':15,17 't':7 'us':10,11
                                    'search_combo'  '1966':26,27 'ain':1A,24 'aint':3A 'blogspot':20 'com':21 'crying':7A 'four':11B 'garage':32,34 'garagetapes':19,37 'garagetapesblogspotcom':22 'gr':31 'gt041':23 'i':14C 'in':6A,16C 'live':15C 'no':4A 'no041':13C 'pl':36 'rock':30 'set':33,35 'springtime':18C 'susan':8A 't':2A,25 'tape':12C 'the':9B,17C 'us':28,29 'use':5A 'what':10B
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  8B
                                           '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-3', 'q-grit-2']
                                      'lastfmtags'  ['girl group', 'female vocalist', 'female vocalists', '60s', 'garage']
                                        'tag_date'  1966
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620383090.0638404  (2021-05-07 12:24:50)
                             'size'  3968834