======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '201'
                                          'artist'  'Sarah Vaughan'
                                     'text_people'  'Don George/Duke Ellington/Johnny Hodges'
                                         'release'  'The Essential Sarah Vaughan'
                                           'title'  "It Shouldn't Happen to a Dream"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '133.933'
                                             'key'  '3A'
                                        '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 Essential Sarah Vaughan'
'TBPM' (BPM (beats per minute))                     '133.933'
'TCOM' (Composer)                                   'Don George/Duke Ellington/Johnny Hodges'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         "It Shouldn't Happen to a Dream"
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Sarah Vaughan'
'TPE2' (Band/orchestra/accompaniment)               'Sarah Vaughan'
'TPUB' (Publisher)                                  'Polygram'
'TRCK' (Track number/Position in set)               '2'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '137,187'
'TXXX:MP3GAIN_UNDO'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.65 dB'
'TXXX:replaygain_track_peak'                        '0.348083'

========================== row from database ==========================
                                              'id'  1513100
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Sarah Vaughan/Sarah Vaughan -02- It Shouldn_t Happen to a Dream.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  201
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  3223424
                                           'mtime'  1620534752
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 02 Shouldn_t prerock jb jazz vocal
                                      'tag_artist'  Sarah Vaughan
                                     'tag_release'  The Essential Sarah Vaughan
                                       'tag_title'  It Shouldn't Happen to a Dream
                                             'bpm'  133.933
                                    'search_title'  'a':7 'dream':8 'happen':5 'it':1 'shouldn':2 'shouldnt':4 't':3 'to':6
                                   'search_artist'  'sarah':1 'vaughan':2
                                  'search_release'  'essential':2 'sarah':3 'the':1 'vaughan':4
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':8 'oldies':3 'prerock':7 'shouldn':5 't':6 'vocal':9
                                    'search_combo'  'a':7A 'country':18 'dream':8A 'essential':12C 'exotica':16 'happen':5A 'it':1A 'jazz':15 'jb':22 'oldies':17 'prerock':21 'sarah':9B,13C 'shouldn':2A,19 'shouldnt':4A 't':3A,20 'the':11C 'to':6A 'vaughan':10B,14C 'vocal':23
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  3A
                                           '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-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
                                        'tag_date'  1955
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620534752.486986  (2021-05-09 06:32:32)
                             'size'  3223424