======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '235'
                                          'artist'  'Dave Hamilton'
                                     'text_people'  ''
                                         'release'  'Detroit City Grooves'
                                           'title'  'Brother Ratt'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['all', 'jazz', '70s', 'funk', '7soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '16'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '130.9'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000FE0 00000FE0 000105D9 000105D9 00023DFA 00023DFA 000090C3 000090C3 '
 '0002E94E 0002E94E')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AF8 00000000009E92F8 00000000 008FC000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '16+239294742251E91F7251223530801254+5980676'
'TALB' (Album/Movie/Show title)                     'Detroit City Grooves'
'TBPM' (BPM (beats per minute))                     '130.9'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '2005'
'TENC' (Encoded by)                                 'iTunes 8.0'
'TIT2' (Title/songname/content description)         'Brother Ratt'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Hamilton'
'TPE2' (Band/orchestra/accompaniment)               'Dave Hamilton'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '3/16'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['all', 'jazz', '70s', 'funk', '7soul']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                        '-9.40 dB'
'TXXX:replaygain_track_peak'                        '1.129365'
'UFID:http://www.cddb.com/id3/taginfo.html'         UFID(owner='http://www.cddb.com/id3/taginfo.html', data=b'3CD3O8R85840371V2803F8FCDE8EAAD3E6C168FEE25D1EE7AEP5\x00')

========================== row from database ==========================
                                              'id'  1534298
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Dave Hamilton - Brother Ratt.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  235
                                           'genre'  funk or soul
                                        'filesize'  9431371
                                           'mtime'  1628357811
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s funk or soul
                                      'tag_artist'  Dave Hamilton
                                     'tag_release'  Detroit City Grooves
                                       'tag_title'  Brother Ratt
                                             'bpm'  130.9
                                    'search_title'  'brother':1 'ratt':2
                                   'search_artist'  'dave':1 'hamilton':2
                                  'search_release'  'city':2 'detroit':1 'grooves':3
                                     'search_rest'  '70':6 'easy':4 'funk':2 'instr':5 'or':8 's':7 'soul':3 'swing':1
                                    'search_combo'  '70':13 'brother':1A 'city':6C 'dave':3B 'detroit':5C 'easy':11 'funk':9 'grooves':7C 'hamilton':4B 'instr':12 'or':15 'ratt':2A 's':14 'soul':10 'swing':8
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  12A
                                           '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-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['all', 'jazz', '70s', 'funk', '7soul']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357810.6471646  (2021-08-07 19:36:50)
                             'size'  9431371