======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '318'
                                          'artist'  'Don Cherry'
                                     'text_people'  ''
                                         'release'  'Easy Instr 70s'
                                           'title'  'Brown Rice (pz.v.)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-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-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['free jazz', 'avant garde', 'fusion', 'jazz', 'trumpet']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '141.7'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000007E5 00000667 0000C648 000072CD 000446CB 00042397 00007612 00006747 '
 '00014C8D 00032DE0')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A0E 0000000000D65162 00000000 0061276E 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Easy Instr 70s'
'TBPM' (BPM (beats per minute))                     '141.7'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TENC' (Encoded by)                                 'iTunes v7.0.2'
'TIT2' (Title/songname/content description)         'Brown Rice (pz.v.)'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Don Cherry'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['free jazz', 'avant garde', 'fusion', 'jazz', 'trumpet']
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.44 dB'
'TXXX:replaygain_track_peak'                        '0.546337'

========================== row from database ==========================
                                              'id'  1529470
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Don Cherry - Brown Rice (pz.v.).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  318
                                           'genre'  funk or soul
                                        'filesize'  6373404
                                           'mtime'  1628357816
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY 70_s funk or soul
                                      'tag_artist'  Don Cherry
                                     'tag_release'  Easy Instr 70s
                                       'tag_title'  Brown Rice (pz.v.)
                                             'bpm'  141.7
                                    'search_title'  'brown':1 'pz':3 'pzv':5 'rice':2 'v':4
                                   'search_artist'  'cherry':2 'don':1
                                  'search_release'  '70s':3 'easy':1 'instr':2
                                     'search_rest'  '70':5 'easy':4 'funk':2 'or':7 's':6 'soul':3 'swing':1
                                    'search_combo'  '70':15 '70s':10C 'brown':1A 'cherry':7B 'don':6B 'easy':8C,14 'funk':12 'instr':9C 'or':17 'pz':3A 'pzv':5A 'rice':2A 's':16 'soul':13 'swing':11 'v':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', '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'  ['free jazz', 'avant garde', 'fusion', 'jazz', 'trumpet']
                                        'tag_date'  1975
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1628357816.1384785  (2021-08-07 19:36:56)
                             'size'  6373404