======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '158'
                                          'artist'  'Unknown'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'What am I worth'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-SYN-1', 'Q-UNU-1', 'Q-PLAY-2', 'q-bass-3', "
 "'Q-CHART-2', 'Q-JZFKS-1', 'Q-OLDST-1', 'q-drums-1', 'q-other-3', "
 "'q-piano-1', 'q-vocals-3', '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'  '145.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '145.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-country'
'TENC' (Encoded by)                                 'iTunes v4.7.1.30'
'TIT2' (Title/songname/content description)         'What am I worth'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Unknown'
'TXXX:MusicMagic Data'                              'AgEBWo1whGyjuZYMgaCh4YABgAGGJ47oFk2mpDwFgKHoO4ABheQm37SWgFWdQIzhgAGAAe9C5PwSSZiHgRq2xACK0Mu+mMWxgAKAAYRcpGSaxoJj/Zgo7IdIhO6GBxDVpnA1x4PQ3HuKP4kIG+qyg4wWwXSQu4HQgAHZTtwKCT2e6ICqu3ANOebooNW5xoUEgAE='
'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'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.56 dB'
'TXXX:replaygain_track_peak'                        '0.560956'

========================== row from database ==========================
                                              'id'  1495195
                                            'path'  /data/Music/Other/Pa/Country/What am I worth.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  158
                                           'genre'  prerock-country
                                        'filesize'  3182069
                                           'mtime'  1621094198
                                   'redo_metaread'  0
                                        'rest_str'   Pa Country prerock country
                                      'tag_artist'  Unknown
                                     'tag_release'  None
                                       'tag_title'  What am I worth
                                             'bpm'  145.6
                                    'search_title'  'am':2 'i':3 'what':1 'worth':4
                                   'search_artist'  'unknown':1
                                  'search_release'  
                                     'search_rest'  'country':2 'pa':1 'prerock':3
                                    'search_combo'  'am':2A 'country':7 'i':3A 'pa':6 'prerock':8 'unknown':5B 'what':1A 'worth':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094198.039525  (2021-05-15 17:56:38)
                             'size'  3182069