======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '316'
                                          'artist'  'Ancient Grease'
                                     'text_people'  'Stevens'
                                         'release'  'Cthullu Lives Volume 1: Lo Fi Riff Tsunami'
                                           'title'  'Mother Grease The Cat'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', 'Q-CHART-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['hard rock', 'blues rock', 'psychedelic rock', 'heavy psych', 'classic rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '123.8'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::XXX'                                         'http://aftersabbath.blogspot.com for more....'
'TALB' (Album/Movie/Show title)                     'Cthullu Lives Volume 1: Lo Fi Riff Tsunami'
'TBPM' (BPM (beats per minute))                     '123.8'
'TCOM' (Composer)                                   'Stevens'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Mother Grease The Cat'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ancient Grease'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Trained Monkeys'
'TRCK' (Track number/Position in set)               '09'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '1'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:ignore'                                       'mother grease the cat'
'TXXX:lastfmtags'                                   ['hard rock', 'blues rock', 'psychedelic rock', 'heavy psych', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.95 dB'
'TXXX:replaygain_track_peak'                        '0.868551'

========================== row from database ==========================
                                              'id'  1478002
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/va - cthullu lives volume 1 [lo fi riff tsunami]/cthullu lives vol.1 lo fi riff tsunami - 09 - ancient grease - mother grease the cat - 1970_001.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  316
                                           'genre'  rock-cppex
                                        'filesize'  7605232
                                           'mtime'  1620736874
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy va cthullu lives volume [lo fi riff tsunami] cthullu lives vol.1 lo fi riff tsunami 09 ancient grease mother grease cat 1970_001 rock cppex
                                      'tag_artist'  Ancient Grease
                                     'tag_release'  Cthullu Lives Volume 1: Lo Fi Riff Tsunami
                                       'tag_title'  Mother Grease The Cat
                                             'bpm'  123.8
                                    'search_title'  'cat':4 'grease':2 'mother':1 'the':3
                                   'search_artist'  'ancient':1 'grease':2
                                  'search_release'  '1':4,5 'cthullu':1 'fi':7 'lives':2 'lo':6 'riff':8 'tsunami':9 'volume':3
                                     'search_rest'  '001':20 '1':13 '1970':19 'ancient':15 'cat':18 'classicprogpsy':1 'cppex':22 'cthullu':3 'fi':8 'grease':16 'lives':4 'lo':6,7 'mother':17 'riff':9 'rock':21 'tsunami':10,11 'va':2 'vol':12 'vol1':14 'volume':5
                                    'search_combo'  '001':35 '1':10C,11C,28 '1970':34 'ancient':5B,30 'cat':4A,33 'classicprogpsy':16 'cppex':37 'cthullu':7C,18 'fi':13C,23 'grease':2A,6B,31 'lives':8C,19 'lo':12C,21,22 'mother':1A,32 'riff':14C,24 'rock':36 'the':3A 'tsunami':15C,25,26 'va':17 'vol':27 'vol1':29 'volume':9C,20
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-1', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['hard rock', 'blues rock', 'psychedelic rock', 'heavy psych', 'classic rock']
                                        'tag_date'  1970
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620736873.5137265  (2021-05-11 14:41:13)
                             'size'  7605232