======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '382'
                                          'artist'  'Bessie Smith'
                                     'text_people'  ''
                                         'release'  'The Collection'
                                           'title'  'Empty Bed Blues (Parts 1 & 2)'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz vocal', 'blues', 'jazz', 'female vocalists', 'classic blues']"
                                     'discogstags'  "['jazz', 'blues', 'country blues', 'delta blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '84.245'
                                             'key'  '4A'
                                        '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)                     'The Collection'
'TBPM' (BPM (beats per minute))                     '84.245'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1928'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Empty Bed Blues (Parts 1 & 2)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bessie Smith'
'TRCK' (Track number/Position in set)               '12'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'blues', 'country blues', 'delta blues']
'TXXX:lastfmtags'                                   ['jazz vocal', 'blues', 'jazz', 'female vocalists', 'classic blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.75 dB'
'TXXX:replaygain_track_peak'                        '0.447416'

========================== row from database ==========================
                                              'id'  675499
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Best of Bessie Smith_jand/Bessie Smith Empty Bed Blues (Parts 1 & 2).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  382
                                           'genre'  prerock-jb-blues
                                        'filesize'  7662049
                                           'mtime'  1620402599
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Best of Smith_jand prerock jb blues
                                      'tag_artist'  Bessie Smith
                                     'tag_release'  The Collection
                                       'tag_title'  Empty Bed Blues (Parts 1 & 2)
                                             'bpm'  84.245
                                    'search_title'  '1':6 '2':7,8 'bed':2 'blues':3 'empty':1 'parts':4,5
                                   'search_artist'  'bessie':1 'smith':2
                                  'search_release'  'collection':2 'the':1
                                     'search_rest'  'best':5 'blues':11 'country':4 'exotica':2 'jand':8 'jazz':1 'jb':10 'of':6 'oldies':3 'prerock':9 'smith':7
                                    'search_combo'  '1':6A '2':7A,8A 'bed':2A 'bessie':9B 'best':17 'blues':3A,23 'collection':12C 'country':16 'empty':1A 'exotica':14 'jand':20 'jazz':13 'jb':22 'of':18 'oldies':15 'parts':4A,5A 'prerock':21 'smith':10B,19 'the':11C
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['jazz vocal', 'blues', 'jazz', 'female vocalists', 'classic blues']
                                        'tag_date'  1928
                                     'discogstags'  ['jazz', 'blues', 'country blues', 'delta blues']

============================== file details ==============================
                                           'mtime'  1620402599.472082  (2021-05-07 17:49:59)
                             'size'  7662049