======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '123'
                                          'artist'  'Gary Pig Cold'
                                     'text_people'  ''
                                         'release'  'Una Go Go / Battle Of The One Man Bands'
                                           'title'  'Gary Pig Cold - Cake On My Pants Baby'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '98.645'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'PRIV:AverageLevel:{\x11\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x11\x00\x00')
'PRIV:PeakValue:¡~\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1~\x00\x00')
'TALB' (Album/Movie/Show title)                     'Una Go Go / Battle Of The One Man Bands'
'TBPM' (BPM (beats per minute))                     '98.645'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TDRC' (Recording time)                             '2002'
'TENC' (Encoded by)                                 'iTunes 9.2.1'
'TIT2' (Title/songname/content description)         'Gary Pig Cold - Cake On My Pants Baby'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Gary Pig Cold'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.40 dB'
'TXXX:replaygain_track_peak'                        '0.415190'
'UFID:http://www.cddb.com/id3/taginfo1.html'        UFID(owner='http://www.cddb.com/id3/taginfo1.html', data=b'3CD3N66R76235058V08B3FF4CF55468EDA54399C00DC81F8413P3\x00')

========================== row from database ==========================
                                              'id'  735852
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Gary Pig Cold - Cake On My Pants Baby.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  123
                                           'genre'  set-th-candy
                                        'filesize'  2977077
                                           'mtime'  1620343113
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets set th candy
                                      'tag_artist'  Gary Pig Cold
                                     'tag_release'  Una Go Go / Battle Of The One Man Bands
                                       'tag_title'  Gary Pig Cold - Cake On My Pants Baby
                                             'bpm'  98.645
                                    'search_title'  'baby':8 'cake':4 'cold':3 'gary':1 'my':6 'on':5 'pants':7 'pig':2
                                   'search_artist'  'cold':3 'gary':1 'pig':2
                                  'search_release'  'bands':8 'battle':3 'go':2 'man':7 'of':4 'one':6 'the':5 'una':1
                                     'search_rest'  'candy':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':6 'sweets':5 'th':7
                                    'search_combo'  'baby':8A 'bands':19C 'battle':14C 'cake':4A 'candy':27 'cold':3A,11B 'country':23 'exotica':21 'gary':1A,9B 'go':13C 'jazz':20 'man':18C 'my':6A 'of':15C 'oldies':22 'on':5A 'one':17C 'pants':7A 'pig':2A,10B 'set':25 'sweets':24 'th':26 'the':16C 'una':12C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343113.458111  (2021-05-07 01:18:33)
                             'size'  2977077