======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '147'
                                          'artist'  'Bill Monroe bluegrass'
                                     'text_people'  ''
                                         'release'  'Bill Monroe'
                                           'title'  "I'm going back to old Kentucky"
                                           'quals'  ("['Q-HAP-3', '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'  '124.0'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bill Monroe'
'TBPM' (BPM (beats per minute))                     '124.0'
'TCON' (Content type, a.k.a. Genre)                 'prerock-country'
'TENC' (Encoded by)                                 'iTunes v4.7.1.30'
'TIT2' (Title/songname/content description)         "I'm going back to old Kentucky"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Monroe'
'TPE2' (Band/orchestra/accompaniment)               'Bill Monroe bluegrass'
'TXXX:MusicMagic Data'                              'AQEBWiCkhmG445LPgXHWEYABgAGC4oT5QGGzVATigV/8NIABl4wlHa0VgAHL7rQ+gAGkk+M8vPXfm4ABgAGslirg1wO7HLRdgAKAAQ=='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'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'                        '+0.14 dB'
'TXXX:replaygain_track_peak'                        '0.520152'

========================== row from database ==========================
                                              'id'  1495387
                                            'path'  /data/Music/Other/Pa/Country/Bill Monroe bluegrass/I'm going back to old Kentucky.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  147
                                           'genre'  prerock-country
                                        'filesize'  2960421
                                           'mtime'  1678464281
                                   'redo_metaread'  0
                                        'rest_str'   Pa Country prerock country
                                      'tag_artist'  Bill Monroe bluegrass
                                     'tag_release'  Bill Monroe
                                       'tag_title'  I'm going back to old Kentucky
                                             'bpm'  124.0
                                    'search_title'  'back':5 'going':4 'i':1 'im':3 'kentucky':8 'm':2 'old':7 'to':6
                                   'search_artist'  'bill':1 'bluegrass':3 'monroe':2
                                  'search_release'  'bill':1 'monroe':2
                                     'search_rest'  'country':2 'pa':1 'prerock':3
                                    'search_combo'  'back':5A 'bill':9B,12C 'bluegrass':11B 'country':15 'going':4A 'i':1A 'im':3A 'kentucky':8A 'm':2A 'monroe':10B,13C 'old':7A 'pa':14 'prerock':16 'to':6A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-3', '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']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678464281.4830935  (2023-03-10 17:04:41)
                             'size'  2960421