======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '281'
                                          'artist'  'Santana'
                                     'text_people'  ''
                                         'release'  'Supernatural'
                                           'title'  'Africa Bamba'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['guitar', 'blues', 'classic rock', 'latin', 'rock']"
                                     'discogstags'  "['rock', 'blues rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '100.009'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Supernatural'
'TBPM' (BPM (beats per minute))                     '100.009'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Africa Bamba'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Santana'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'blues rock', 'classic rock']
'TXXX:lastfmtags'                                   ['guitar', 'blues', 'classic rock', 'latin', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.08 dB'
'TXXX:replaygain_track_peak'                        '0.447055'

========================== row from database ==========================
                                              'id'  1301957
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0168 Santana - Supernatural/Supernatural-04-Africa Bamba.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  281
                                           'genre'  rock-cppex-classic
                                        'filesize'  6760026
                                           'mtime'  1636039359
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0168 04 rock cppex classic
                                      'tag_artist'  Santana
                                     'tag_release'  Supernatural
                                       'tag_title'  Africa Bamba
                                             'bpm'  100.009
                                    'search_title'  'africa':1 'bamba':2
                                   'search_artist'  'santana':1
                                  'search_release'  'supernatural':1
                                     'search_rest'  '00poprockelectronic':1 '0168':5 '1000':4 'album':2 'classic':8 'cppex':7 'rock':6 'top':3
                                    'search_combo'  '00poprockelectronic':5 '0168':9 '1000':8 'africa':1A 'album':6 'bamba':2A 'classic':12 'cppex':11 'rock':10 'santana':3B 'supernatural':4C 'top':7
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['guitar', 'blues', 'classic rock', 'latin', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  ['rock', 'blues rock', 'classic rock']

============================== file details ==============================
                                           'mtime'  1636039358.753062  (2021-11-04 16:22:38)
                             'size'  6760026