======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '168'
                                          'artist'  'The Rebounds'
                                     'text_people'  ''
                                         'release'  "Tape No089 - (I'm Not Your) Stepping Stone"
                                           'title'  "Steppin' Stone"
                                           '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-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['beat', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '22'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes;set-cover or covered'
                                             'bpm'  '133.7'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'http://garagetapes.blogspot.com/'
'TALB' (Album/Movie/Show title)                     "Tape No089 - (I'm Not Your) Stepping Stone"
'TBPM' (BPM (beats per minute))                     '133.7'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes', 'set-cover or covered']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         "Steppin' Stone"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Rebounds'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '22'
'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'                                      'US'
'TXXX:discogstags'                                  ['beat', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'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'                        '+16.81 dB'
'TXXX:replaygain_track_peak'                        '0.080228'
'TXXX:tracknum'                                     '22'

========================== row from database ==========================
                                              'id'  1508437
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT089/22 - The Rebounds - Steppin_ Stone (196 US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  168
                                           'genre'  rock-gr-garage;set-pl-garagetapes;set-cover or covered
                                        'filesize'  4124257
                                           'mtime'  1620383828
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT089 22 Steppin_ (196 US) rock gr garage;set pl garagetapes;set cover or covered
                                      'tag_artist'  The Rebounds
                                     'tag_release'  Tape No089 - (I'm Not Your) Stepping Stone
                                       'tag_title'  Steppin' Stone
                                             'bpm'  133.7
                                    'search_title'  'steppin':1,2 'stone':3
                                   'search_artist'  'rebounds':2 'the':1
                                  'search_release'  'i':3 'im':5 'm':4 'no089':2 'not':6 'stepping':9 'stone':10 'tape':1 'your':7,8
                                     'search_rest'  '196':8,9 '22':6 'blogspot':2 'com':3 'cover':23 'covered':25 'garage':14,16 'garagetapes':1,19,21 'garagetapesblogspotcom':4 'gr':13 'gt089':5 'or':24 'pl':18 'rock':12 'set':15,17,20,22 'steppin':7 'us':10,11
                                    'search_combo'  '196':23,24 '22':21 'blogspot':17 'com':18 'cover':38 'covered':40 'garage':29,31 'garagetapes':16,34,36 'garagetapesblogspotcom':19 'gr':28 'gt089':20 'i':8C 'im':10C 'm':9C 'no089':7C 'not':11C 'or':39 'pl':33 'rebounds':5B 'rock':27 'set':30,32,35,37 'steppin':1A,2A,22 'stepping':14C 'stone':3A,15C 'tape':6C 'the':4B 'us':25,26 'your':12C,13C
                                    'tag_tracknum'  22
                                      'num_images'  1
                                             'key'  9A
                                           '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-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1965
                                     'discogstags'  ['beat', 'rock']

============================== file details ==============================
                                           'mtime'  1620383827.7447135  (2021-05-07 12:37:07)
                             'size'  4124257