======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '218'
                                          'artist'  'Caterpillar Industrial Equipment'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Shake Hands With Danger'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '18'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-namerica-country;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '143.925'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000DF2 00000DE3 0000AB56'
'COMM:iTunNORM:eng'                                 (' 00000DF2 00000DE3 0000AB56 0000AB56 000227BC 000227BC 000081EA 0000836C '
 '000177D0 0001A243')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000830 00000000009343C0 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            'F80B3812+215599+18+150+1655+12718+25022+42972+59386+60696+75236+84655+104133+121166+131849+135340+150283+171474+187263+202232+212823'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '5'
'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '143.925'
'TCON' (Content type, a.k.a. Genre)                 ['loc-namerica-country', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TENC' (Encoded by)                                 'iTunes v6.0.5'
'TIT2' (Title/songname/content description)         'Shake Hands With Danger'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Caterpillar Industrial Equipment'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '5/18'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.10 dB'
'TXXX:replaygain_track_peak'                        '0.431706'

========================== row from database ==========================
                                              'id'  949117
                                            'path'  /data/Music/Bulk/sns/ShakeHandsWithDanger.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  218
                                           'genre'  loc-namerica-country;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  5310108
                                           'mtime'  1621630400
                                   'redo_metaread'  0
                                        'rest_str'   sns ShakeHandsWithDanger loc namerica country;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Caterpillar Industrial Equipment
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Shake Hands With Danger
                                             'bpm'  143.925
                                    'search_title'  'danger':4 'hands':2 'shake':1 'with':3
                                   'search_artist'  'caterpillar':1 'equipment':3 'industrial':2
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'country':5,7 'danger':18 'hands':16 'loc':3 'mor':14 'namerica':4 'pl':9 'set':6,8,11,13 'shake':15 'shakehandswithdanger':2 'shirleyspinoza':10,12 'sns':1 'with':17
                                    'search_combo'  'caterpillar':5B 'country':14,16 'danger':4A,27 'equipment':7B 'hands':2A,25 'industrial':6B 'loc':12 'mor':23 'namerica':13 'pl':18 'set':15,17,20,22 'shake':1A,24 'shakehandswithdanger':11 'shirley':8C 'shirleyspinoza':19,21 'sns':10 'spinoza':9C 'with':3A,26
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630400.2406425  (2021-05-21 22:53:20)
                             'size'  5310108