======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '524'
                                          'artist'  'Arturo Benedetti Michelangeli'
                                     'text_people'  ''
                                         'release'  'concerto 20 K.466'
                                           'title'  'Mozart, Piano Concerto K. 466 - 3'
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'Q-PIANO-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['classical piano', 'classical', 'bc pianists', 'piano', 'pianist', 'italian']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '124.929'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'concerto 20 K.466'
'TBPM' (BPM (beats per minute))                     '124.929'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Mozart, Piano Concerto K. 466 - 3'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Wolfgang Amadeus Mozart'
'TPE2' (Band/orchestra/accompaniment)               'Arturo Benedetti Michelangeli'
'TRCK' (Track number/Position in set)               '4'
'TXXX:FMPS_Playcount'                               '1'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['classical piano', 'classical', 'bc pianists', 'piano', 'pianist', 'italian']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.75 dB'
'TXXX:replaygain_track_peak'                        '0.825918'

========================== row from database ==========================
                                              'id'  1311108
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Arturo Benedetti Michelangeli__cifs8ead.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  524
                                           'genre'  rock-unsorted
                                        'filesize'  12610370
                                           'mtime'  1620392292
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Michelangeli__cifs8ead rock unsorted
                                      'tag_artist'  Arturo Benedetti Michelangeli
                                     'tag_release'  concerto 20 K.466
                                       'tag_title'  Mozart, Piano Concerto K. 466 - 3
                                             'bpm'  124.929
                                    'search_title'  '3':8 '466':7 'concerto':4 'k':5,6 'mozart':1,2 'piano':3
                                   'search_artist'  'arturo':1 'benedetti':2 'michelangeli':3
                                  'search_release'  '20':2 '466':4 'concerto':1 'k':3 'k466':5
                                     'search_rest'  '00poprockelectronic':1 'cifs8ead':8 'files':5,6 'loose':3,4 'michelangeli':7 'rock':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':17 '20':13C '3':8A '466':7A,15C 'arturo':9B 'benedetti':10B 'cifs8ead':24 'concerto':4A,12C 'files':21,22 'k':5A,6A,14C 'k466':16C 'loose':19,20 'michelangeli':11B,23 'mozart':1A,2A 'piano':3A 'rock':25 'unsorted':18
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical piano', 'classical', 'bc pianists', 'piano', 'pianist', 'italian']
                                        'tag_date'  2000
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1620392292.2159226  (2021-05-07 14:58:12)
                             'size'  12610370