======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '250'
                                          'artist'  'Nina Simone'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'I Love You Porgy'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-3', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'blues', 'jazz', 'female vocalists', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '143.213'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TBPM' (BPM (beats per minute))                     '143.213'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TIT2' (Title/songname/content description)         'I Love You Porgy'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nina Simone'
'TXXX:Mp3gain_minmax'                               '105,187'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['vocal jazz', 'blues', 'jazz', 'female vocalists', 'soul']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.38 dB'
'TXXX:replaygain_track_peak'                        '0.574252'

========================== row from database ==========================
                                              'id'  773153
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Simone, Nina/Nina Simone - I Love You Porgy.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  250
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  4012371
                                           'mtime'  1620535049
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Simone, prerock jb jazz vocal
                                      'tag_artist'  Nina Simone
                                     'tag_release'  None
                                       'tag_title'  I Love You Porgy
                                             'bpm'  143.213
                                    'search_title'  'i':1 'love':2 'porgy':4 'you':3
                                   'search_artist'  'nina':1 'simone':2
                                  'search_release'  
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':8 'oldies':3 'prerock':7 'simone':5,6 'vocal':9
                                    'search_combo'  'country':10 'exotica':8 'i':1A 'jazz':7 'jb':14 'love':2A 'nina':5B 'oldies':9 'porgy':4A 'prerock':13 'simone':6B,11,12 'vocal':15 'you':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['vocal jazz', 'blues', 'jazz', 'female vocalists', 'soul']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620535048.6162097  (2021-05-09 06:37:28)
                             'size'  4012371