======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '409'
                                          'artist'  "San Francisco's Shiver"
                                     'text_people'  ''
                                         'release'  'Cthullu Lives Vol.1 Lo Fi Riff Tsunami'
                                           'title'  'Tough As Nails'
                                           'quals'  ("['Q-SYN-2', 'Q-UNU-1', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-2', 'q-bass-4', "
 "'Q-CHART-2', 'Q-JZFKS-1', 'Q-OLDST-2', 'q-drums-4', 'q-other-2', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['psychedelic rock', 'psychedelic', 'hard rock', 'blues rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '109.8'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'http://aftersabbath.blogspot.com for more....'
'TALB' (Album/Movie/Show title)                     'Cthullu Lives Vol.1 Lo Fi Riff Tsunami'
'TBPM' (BPM (beats per minute))                     '109.8'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         'Tough As Nails'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               "San Francisco's Shiver"
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'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'                                       '2'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:ignore'                                       "01.san francisco's shiver"
'TXXX:lastfmtags'                                   ['psychedelic rock', 'psychedelic', 'hard rock', 'blues rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.90 dB'
'TXXX:replaygain_track_peak'                        '0.520773'

========================== row from database ==========================
                                              'id'  1515584
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/va - cthullu lives volume 1 [lo fi riff tsunami]/cthullu lives vol.1 lo fi riff tsunami - 01 - san francisco_s shiver - tough as nails - 1972.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  409
                                           'genre'  rock-cppex
                                        'filesize'  9827670
                                           'mtime'  1620736868
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy va cthullu lives volume [lo fi riff tsunami] cthullu lives vol.1 lo fi riff tsunami 01 san francisco_s shiver tough as nails 1972 rock cppex
                                      'tag_artist'  San Francisco's Shiver
                                     'tag_release'  Cthullu Lives Vol.1 Lo Fi Riff Tsunami
                                       'tag_title'  Tough As Nails
                                             'bpm'  109.8
                                    'search_title'  'as':2 'nails':3 'tough':1
                                   'search_artist'  'francisco':2 'franciscos':4 's':3 'san':1 'shiver':5
                                  'search_release'  '1':4 'cthullu':1 'fi':7 'lives':2 'lo':6 'riff':8 'tsunami':9 'vol':3 'vol1':5
                                     'search_rest'  '1':13 '1972':22 'as':20 'classicprogpsy':1 'cppex':24 'cthullu':3 'fi':8 'francisco':16 'lives':4 'lo':6,7 'nails':21 'riff':9 'rock':23 's':17 'san':15 'shiver':18 'tough':19 'tsunami':10,11 'va':2 'vol':12 'vol1':14 'volume':5
                                    'search_combo'  '1':12C,30 '1972':39 'as':2A,37 'classicprogpsy':18 'cppex':41 'cthullu':9C,20 'fi':15C,25 'francisco':5B,33 'franciscos':7B 'lives':10C,21 'lo':14C,23,24 'nails':3A,38 'riff':16C,26 'rock':40 's':6B,34 'san':4B,32 'shiver':8B,35 'tough':1A,36 'tsunami':17C,27,28 'va':19 'vol':11C,29 'vol1':13C,31 'volume':22
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-2', 'q-other-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['psychedelic rock', 'psychedelic', 'hard rock', 'blues rock']
                                        'tag_date'  1972
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736868.4985924  (2021-05-11 14:41:08)
                             'size'  9827670