======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '388'
                                          'artist'  'Bessie Smith'
                                     'text_people'  ''
                                         'release'  'The Best of Bessie Smith'
                                           'title'  'Bessie Smith Empty Bed Blues'
                                           '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']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '84.140'
                                             'key'  '7B'
                                        '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 Best of Bessie Smith'
'TBPM' (BPM (beats per minute))                     '84.140'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Bessie Smith Empty Bed Blues'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bessie Smith'
'TPE2' (Band/orchestra/accompaniment)               'Bessie Smith'
'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: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'                        '+2.98 dB'
'TXXX:replaygain_track_peak'                        '0.573503'

========================== row from database ==========================
                                              'id'  679712
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Best of Bessie Smith_jand/Bessie Smith Empty Bed Blues.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  388
                                           'genre'  prerock-jb-blues
                                        'filesize'  6213103
                                           'mtime'  1620402599
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Smith_jand prerock jb blues
                                      'tag_artist'  Bessie Smith
                                     'tag_release'  The Best of Bessie Smith
                                       'tag_title'  Bessie Smith Empty Bed Blues
                                             'bpm'  84.14
                                    'search_title'  'bed':4 'bessie':1 'blues':5 'empty':3 'smith':2
                                   'search_artist'  'bessie':1 'smith':2
                                  'search_release'  'bessie':4 'best':2 'of':3 'smith':5 'the':1
                                     'search_rest'  'blues':9 'country':4 'exotica':2 'jand':6 'jazz':1 'jb':8 'oldies':3 'prerock':7 'smith':5
                                    'search_combo'  'bed':4A 'bessie':1A,6B,11C 'best':9C 'blues':5A,21 'country':16 'empty':3A 'exotica':14 'jand':18 'jazz':13 'jb':20 'of':10C 'oldies':15 'prerock':19 'smith':2A,7B,12C,17 'the':8C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           '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'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402599.472701  (2021-05-07 17:49:59)
                             'size'  6213103