======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '133'
                                          'artist'  'Unknown'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Before I met you'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-SYN-1', 'Q-UNU-1', 'Q-PLAY-2', 'q-bass-1', "
 "'Q-CHART-2', 'Q-JZFKS-1', 'Q-OLDST-1', 'q-drums-1', 'q-other-3', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-country'
                                             'bpm'  '132.8'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '132.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-country'
'TENC' (Encoded by)                                 'iTunes v4.7.1.30'
'TIT2' (Title/songname/content description)         'Before I met you'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Unknown'
'TXXX:MusicMagic Data'                              'AgEBWOcphE6c8pIfgcMiaCfJgAGDXIOeFv+oyirhhM/g/oABi8cwGLC3gxrf2IRcg7iAAdso3bfylpb2gAG8VAsi6365bLyZgAKAAYRgobedJoKpAkwpR4ABhX6F4Q/7poAziIRv2cOHUopOHf2ylYoAz0SQU4IlgAHVnN/3AyuZGIABvYUMWu57oVC3moeFgAE='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:http://www.foosic.org/'                       '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'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.22 dB'
'TXXX:replaygain_track_peak'                        '0.485235'

========================== row from database ==========================
                                              'id'  1495077
                                            'path'  /data/Music/Other/Pa/Country/Before I met you.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  133
                                           'genre'  prerock-country
                                        'filesize'  2667991
                                           'mtime'  1621094207
                                   'redo_metaread'  0
                                        'rest_str'   Pa Country prerock country
                                      'tag_artist'  Unknown
                                     'tag_release'  None
                                       'tag_title'  Before I met you
                                             'bpm'  132.8
                                    'search_title'  'before':1 'i':2 'met':3 'you':4
                                   'search_artist'  'unknown':1
                                  'search_release'  
                                     'search_rest'  'country':2 'pa':1 'prerock':3
                                    'search_combo'  'before':1A 'country':7 'i':2A 'met':3A 'pa':6 'prerock':8 'unknown':5B 'you':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-1', 'q-other-3', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094207.1739872  (2021-05-15 17:56:47)
                             'size'  2667991