======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '173'
                                          'artist'  'The Just Us Five'
                                     'text_people'  ''
                                         'release'  "Tape No199 - If You Ever Leave Me Baby I'll Blow Up Your Farm"
                                           'title'  'Tennessee Stud'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '112.0'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'http://garagetapes.blogspot.gr/'
'TALB' (Album/Movie/Show title)                     "Tape No199 - If You Ever Leave Me Baby I'll Blow Up Your Farm"
'TBPM' (BPM (beats per minute))                     '112.0'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Tennessee Stud'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Just Us Five'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '03'
'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'                                  'folk, world, & country'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+24.05 dB'
'TXXX:replaygain_track_peak'                        '0.026995'
'TXXX:tracknum'                                     '03'

========================== row from database ==========================
                                              'id'  503585
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT199/03 - The Just Us Five - Tennessee Stud (196 US) (WA).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  173
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  4242615
                                           'mtime'  1620385201
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT199 03 (196 US) (WA) rock gr garage;set pl garagetapes
                                      'tag_artist'  The Just Us Five
                                     'tag_release'  Tape No199 - If You Ever Leave Me Baby I'll Blow Up Your Farm
                                       'tag_title'  Tennessee Stud
                                             'bpm'  112.0
                                    'search_title'  'stud':2 'tennessee':1
                                   'search_artist'  'five':4 'just':2 'the':1 'us':3
                                  'search_release'  'baby':8 'blow':12 'ever':5 'farm':15 'i':9 'if':3 'ill':11 'leave':6 'll':10 'me':7 'no199':2 'tape':1 'up':13 'you':4 'your':14
                                     'search_rest'  '196':6,7 'blogspot':2 'com':3 'garage':14,16 'garagetapes':1,19 'garagetapesblogspotcom':4 'gr':13 'gt199':5 'pl':18 'rock':12 'set':15,17 'us':8,9 'wa':10,11
                                    'search_combo'  '196':27,28 'baby':14C 'blogspot':23 'blow':18C 'com':24 'ever':11C 'farm':21C 'five':6B 'garage':35,37 'garagetapes':22,40 'garagetapesblogspotcom':25 'gr':34 'gt199':26 'i':15C 'if':9C 'ill':17C 'just':4B 'leave':12C 'll':16C 'me':13C 'no199':8C 'pl':39 'rock':33 'set':36,38 'stud':2A 'tape':7C 'tennessee':1A 'the':3B 'up':19C 'us':5B,29,30 'wa':31,32 'you':10C 'your':20C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  6A
                                           '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-3', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1965
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620385200.5171146  (2021-05-07 13:00:00)
                             'size'  4242615