======================== unified (from filesystem) ========================
                                         'bitrate'  '228.047'
                                        'duration'  '402'
                                          'artist'  'Skylark'
                                     'text_people'  ''
                                         'release'  'progsoup 49'
                                           'title'  'Foster Frees'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['power metal', 'symphonic metal', 'italian', 'melodic metal', 'metal']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '43'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '98.645'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'9\x00+\x009\x006\x00+\x003\x00F\x002\x001\x00+\x008\x006\x00C\x00E\x00+\x00C\x001\x00A\x00F\x00+\x001\x001\x00E\x005\x004\x00+\x001\x006\x007\x007\x002\x00+\x001\x00A\x009\x002\x007\x00+\x002\x001\x00F\x001\x00C\x00+\x002\x005\x00A\x004\x00C\x00+\x002\x00B\x006\x007\x00F\x00\x00\x002\x008\x007\x001\x003\x00\x00\x00\x1f\x00\xaf\xff$\x00\xb6\xff$\x00\xae\xff6\x00\xa8\xff,\x00\xc0\xff!\x00\xb0\xff&\x00\xae\xff2\x00\xb0\xff.\x00\xbc\xff"\x00\xb9\xff\x1a\x00\xb4\xff\x1d\x00\xc6\xff5\x00\xb6\xff%\x00\xb1\xff\x19\x00\xb0\xff)\x00\xb0\xff \x00\xb6\xff$\x00\xa9\xff!\x00\xaa\xff\x1c\x00\xb5\xff(\x00\xad\xff!\x00\xbb\xff\x1b\x00\xb6\xff)\x00\xa8\xff+\x00\xa9\xff\'\x00\xa9\xff!\x00\xae\xff*\x00\xa3\xff.\x00\xa0\xff \x00\xbd\xff#\x00\xb8\xff!\x00\xa0\xff\x1d\x00\xa4\xff\'\x00\xad\xff+\x00\xb3\xff\'\x00\xb0\xff$\x00\xb1\xff\x1e\x00\xba\xff\x19\x00\xb3\xff\x1e\x00\x9e\xff%\x00\xac\xff \x00\xb1\xff#\x00\xaf\xff)\x00\x9f\xff.\x00\x9a\xff&\x00\xaf\xff+\x00\xac\xff\x1e\x00\xb0\xff\x1c\x00\xb8\xff&\x00\xb0\xff)\x00\xa9\xff2\x00\xa2\xff\x1e\x00\x9f\xff\x14\x00\xb0\xff"\x00\xba\xff/\x00\xa5\xff,\x00\xa3\xff/\x00\xab\xff-\x00\xa8\xff#\x00\xa5\xff\'\x00\x94\xff \x00\xae\xff+\x00\xb5\xff7\x00\x9a\xff \x00\xaa\xff(\x00\xa5\xff*\x00\xaa\xff \x00\xa3\xff*\x00\x9d\xff\'\x00\xb5\xff(\x00\xaa\xff%\x00\xa8\xff%\x00\xa4\xff1\x00\x94\xff;\x00\x93\xff:\x00\xa1\xff4\x00\x9c\xff6\x00\x90\xff7\x00\x97\xff8\x00\x94\xff0\x00\xa3\xff<\x00\x88\xffA\x00\x9e\xff8\x00\x9c\xff9\x00\x95\xff.\x00\xa4\xff6\x00\x97\xff\'\x00\xac\xff)\x00\xab\xff,\x00\x9c\xff1\x00\x91\xffr\x00A\x02\x9e\x10\x08\x01\x08\x05\xbf\x00\x08\x05\xbf\x00-\x00\x99\xff0\x00\x8d\xff(\x00\x8b\xff\x18\x00\xa1\xff*\x00\x97\xff+\x00\xa5\xff.\x00\x93\xff.\x00z\xff\x17\x00\xa1\xff2\x00\x8e\xff,\x00\x96\xff\'\x00\x9c\xff+\x00\x92\xff!\x00\x97\xff:\x00~\xff*\x00\xa1\xff!\x00\x90\xff\'\x00\x83\xff)\x00\x9f\xff:\x00\x95\xff5\x00\x84\xff0\x00\x8e\xff:\x00\x90\xff<\x00\x89\xff,\x00\x8b\xff;\x00\x95\xff?\x00\x90\xff2\x00\x87\xff#\x00\x95\xff1\x00\x82\xff4\x00~\xff/\x00\x89\xff;\x00n\xff/\x00\x96\xff8\x00{\xffF\x00d\xff3\x00\x8b\xff?\x00|\xff3\x00\x8c\xff+\x00\x9f\xff9\x00\x89\xff6\x00\x8d\xff6\x00\x93\xff.\x00\x97\xff&\x00\x91\xff4\x00\x85\xff+\x00\x8f\xff&\x00\x88\xff+\x00\x83\xff(\x00\x8e\xff.\x00\x8e\xff*\x00\x8a\xff1\x00\x8c\xff*\x00\x99\xff)\x00\x8e\xff6\x00\x83\xff2\x00\x98\xffE\x00\x82\xff=\x00\x95\xff+\x00\x9c\xff<\x00\x88\xff1\x00\x98\xff7\x00\x8c\xff9\x00n\xff*\x00\x82\xff*\x00\x99\xff-\x00\x97\xff,\x00\xa6\xff>\x00\x9a\xff<\x00\x91\xff)\x00\xaf\xff6\x00\x96\xff-\x00\x89\xff"\x00\x95\xff=\x00\x81\xff')
'TALB' (Album/Movie/Show title)                     'progsoup 49'
'TBPM' (BPM (beats per minute))                     '98.645'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         'Foster Frees'
'TKEY' (Initial key)                                '12A'
'TLEN' (Length)                                     '402626'
'TPE1' (Lead performer(s)/Soloist(s))               'Skylark'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '43'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['power metal', 'symphonic metal', 'italian', 'melodic metal', 'metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.93 dB'
'TXXX:replaygain_track_peak'                        '0.849872'

========================== row from database ==========================
                                              'id'  1415691
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 49/2808 skylark - skylark -foster frees.mp3
                                         'working'  None
                                         'bitrate'  228
                                    'duration_sec'  402
                                           'genre'  rock-cppex-progressive
                                        'filesize'  11481088
                                           'mtime'  1620737521
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP 2808 skylark skylark foster frees rock cppex progressive
                                      'tag_artist'  Skylark
                                     'tag_release'  progsoup 49
                                       'tag_title'  Foster Frees
                                             'bpm'  98.645
                                    'search_title'  'foster':1 'frees':2
                                   'search_artist'  'skylark':1
                                  'search_release'  '49':2 'progsoup':1
                                     'search_rest'  '2808':3 'classicprogpsy':1 'cppex':8 'foster':5 'frees':6 'progressive':9 'progsoup':2 'rock':7 'skylark':4
                                    'search_combo'  '2808':8 '49':5C 'classicprogpsy':6 'cppex':13 'foster':1A,10 'frees':2A,11 'progressive':14 'progsoup':4C,7 'rock':12 'skylark':3B,9
                                    'tag_tracknum'  43
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['power metal', 'symphonic metal', 'italian', 'melodic metal', 'metal']
                                        'tag_date'  1974
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620737520.5462818  (2021-05-11 14:52:00)
                             'size'  11481088