======================== unified (from filesystem) ========================
                                         'bitrate'  '181.485'
                                        'duration'  '379'
                                          'artist'  'Sarah Vaughan'
                                     'text_people'  ''
                                         'release'  'Gold'
                                           'title'  'Send In The Clowns'
                                           'quals'  ("['Q-HAP-3', '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-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'  '30'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '134.466'
                                             'key'  '6B'
                                        '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)                     'Gold'
'TBPM' (BPM (beats per minute))                     '134.466'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Send In The Clowns'
'TKEY' (Initial key)                                '6B'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Sarah Vaughan'
'TRCK' (Track number/Position in set)               '30'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '142,251'
'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'                                       '1'
'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'                        '+2.85 dB'
'TXXX:replaygain_track_peak'                        '0.463013'

========================== row from database ==========================
                                              'id'  671158
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Sarah Vaughan/215-sarah_vaughan-send_in_the_clowns.mp3
                                         'working'  None
                                         'bitrate'  181
                                    'duration_sec'  379
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  8617444
                                           'mtime'  1620534682
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 215 sarah_vaughan send_in_the_clowns prerock jb jazz vocal
                                      'tag_artist'  Sarah Vaughan
                                     'tag_release'  Gold
                                       'tag_title'  Send In The Clowns
                                             'bpm'  134.466
                                    'search_title'  'clowns':4 'in':2 'send':1 'the':3
                                   'search_artist'  'sarah':1 'vaughan':2
                                  'search_release'  'gold':1
                                     'search_rest'  '215':5 'clowns':11 'country':4 'exotica':2 'in':9 'jazz':1 'jb':13 'oldies':3 'prerock':12 'sarah':6 'send':8 'the':10 'vaughan':7 'vocal':14
                                    'search_combo'  '215':12 'clowns':4A,18 'country':11 'exotica':9 'gold':7C 'in':2A,16 'jazz':8 'jb':20 'oldies':10 'prerock':19 'sarah':5B,13 'send':1A,15 'the':3A,17 'vaughan':6B,14 'vocal':21
                                    'tag_tracknum'  30
                                      'num_images'  0
                                             'key'  6B
                                           '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-1', 'q-grit-2']
                                      'lastfmtags'  ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
                                        'tag_date'  2007
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620534681.5321915  (2021-05-09 06:31:21)
                             'size'  8617444