======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '440'
                                          'artist'  'Boogie Woogie Flu / December 2009'
                                     'text_people'  'N/A'
                                         'release'  'Brain Salad Surgery'
                                           'title'  "Toccata (Croydon, London, UK '73)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', '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-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '40'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '145.5'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000464 000006E2 000055FE 0000730A 0005F892 0005ED58 00008502 0000865D '
 '0005E8C1 0005EA97')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000744 000000000128AA2C 00000000 00A164BD 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Brain Salad Surgery'
'TBPM' (BPM (beats per minute))                     '145.5'
'TCOM' (Composer)                                   'N/A'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1973'
'TENC' (Encoded by)                                 'iTunes 9.0.2'
'TIT2' (Title/songname/content description)         "Toccata (Croydon, London, UK '73)"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Emerson, Lake & Palmer'
'TPE2' (Band/orchestra/accompaniment)               'Boogie Woogie Flu / December 2009'
'TRCK' (Track number/Position in set)               '40'
'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:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.48 dB'
'TXXX:replaygain_track_peak'                        '1.054344'

========================== row from database ==========================
                                              'id'  1531318
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Emerson, Lake & Palmer - Toccata (Croydon, London, UK _73).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  440
                                           'genre'  funk or soul
                                        'filesize'  10658828
                                           'mtime'  1628357821
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s Emerson, Lake & Palmer _73) funk or soul
                                      'tag_artist'  Boogie Woogie Flu / December 2009
                                     'tag_release'  Brain Salad Surgery
                                       'tag_title'  Toccata (Croydon, London, UK '73)
                                             'bpm'  145.5
                                    'search_title'  '73':7,8 'croydon':2,3 'london':4,5 'toccata':1 'uk':6
                                   'search_artist'  '2009':5 'boogie':1 'december':4 'flu':3 'woogie':2
                                  'search_release'  'brain':1 'salad':2 'surgery':3
                                     'search_rest'  '70':6 '73':12,13 'easy':4 'emerson':8,9 'funk':2 'instr':5 'lake':10 'or':14 'palmer':11 's':7 'soul':3 'swing':1
                                    'search_combo'  '2009':13B '70':22 '73':7A,8A,28,29 'boogie':9B 'brain':14C 'croydon':2A,3A 'december':12B 'easy':20 'emerson':24,25 'flu':11B 'funk':18 'instr':21 'lake':26 'london':4A,5A 'or':30 'palmer':27 's':23 'salad':15C 'soul':19 'surgery':16C 'swing':17 'toccata':1A 'uk':6A 'woogie':10B
                                    'tag_tracknum'  40
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1973
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357821.4774437  (2021-08-07 19:37:01)
                             'size'  10658828