======================== unified (from filesystem) ========================
                                         'bitrate'  '127.207'
                                        'duration'  '150'
                                          'artist'  'Sarah Vaughan'
                                     'text_people'  ''
                                         'release'  'The Essential Sarah Vaughan'
                                           'title'  'Perdido'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', '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-2', 'q-other-3', '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'  '23'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '144.233'
                                             'key'  '8A'
                                        '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))                     '144.233'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDRC' (Recording time)                             '2002'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Perdido'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sarah Vaughan'
'TRCK' (Track number/Position in set)               '23'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '128,182'
'TXXX:MP3GAIN_UNDO'                                 '+002,+002,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'                                      '2'
'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'                        '+0.54 dB'
'TXXX:replaygain_track_peak'                        '0.698678'

========================== row from database ==========================
                                              'id'  678269
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Sarah Vaughan/Sarah Vaughan -23 - Perdido.mp3
                                         'working'  None
                                         'bitrate'  127
                                    'duration_sec'  150
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  2401419
                                           'mtime'  1620534844
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 23 prerock jb jazz vocal
                                      'tag_artist'  Sarah Vaughan
                                     'tag_release'  The Essential Sarah Vaughan
                                       'tag_title'  Perdido
                                             'bpm'  144.233
                                    'search_title'  'perdido':1
                                   'search_artist'  'sarah':1 'vaughan':2
                                  'search_release'  'essential':2 'sarah':3 'the':1 'vaughan':4
                                     'search_rest'  '23':5 'country':4 'exotica':2 'jazz':1 'jb':7 'oldies':3 'prerock':6 'vocal':8
                                    'search_combo'  '23':12 'country':11 'essential':5C 'exotica':9 'jazz':8 'jb':14 'oldies':10 'perdido':1A 'prerock':13 'sarah':2B,6C 'the':4C 'vaughan':3B,7C 'vocal':15
                                    'tag_tracknum'  23
                                      'num_images'  0
                                             'key'  8A
                                           '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-2', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
                                        'tag_date'  2002
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620534843.6707642  (2021-05-09 06:34:03)
                             'size'  2401419