======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '370'
                                          'artist'  'Celestine Ukwu & His Philosophers National'
                                     'text_people'  ''
                                         'release'  'Nigeria Special: Modern Highlife, Afro-Sounds & Nigerian Blues 1970-76'
                                           'title'  'Okwukwe Na Nchekwube'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-UNU-2', 'q-syn-1', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-JZFKS-3', 'q-chart-1', 'q-drums-1', 'q-other-4', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-3']")
                                      'lastfmtags'  "['african', 'nigeria', 'highlife', 'world', 'africa']"
                                     'discogstags'  "['highlife', 'folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '26'
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'loc-africa-nigeria'
                                             'bpm'  '121.5'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000731 00000731 00006CDD 00006CDD 0001CE8D 0001CE8D 00008197 00008197 '
 '00052A0A 00052A0A')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A2C 0000000000F998C4 00000000 00E24EB2 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '13+EC7C648540CE7A04C14535EA9B12E366+10200044'
'TALB' (Album/Movie/Show title)                     'Nigeria Special: Modern Highlife, Afro-Sounds & Nigerian Blues 1970-76'
'TBPM' (BPM (beats per minute))                     '121.5'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-africa-nigeria'
'TDRC' (Recording time)                             '1974'
'TENC' (Encoded by)                                 'iTunes v7.6.0.29'
'TIT2' (Title/songname/content description)         'Okwukwe Na Nchekwube'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Celestine Ukwu & His Philosophers National'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '2/26'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['highlife', 'folk, world, & country']
'TXXX:lastfmtags'                                   ['african', 'nigeria', 'highlife', 'world', 'africa']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.02 dB'
'TXXX:replaygain_track_peak'                        '0.503215'

========================== row from database ==========================
                                              'id'  387480
                                            'path'  /data/Music/Bulk/00instruments-classical/various artists - nigeria special-modern highlife, afro-sounds & nigerian blues 1970-76 [2008]/102 celestine ukwu & his philosophers national - okwukwe na nchekwube.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  370
                                           'genre'  loc-africa-nigeria
                                        'filesize'  15022273
                                           'mtime'  1621629062
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical various artists nigeria special modern highlife, afro sounds nigerian blues [2008] 102 celestine ukwu his philosophers national okwukwe nchekwube loc africa nigeria
                                      'tag_artist'  Celestine Ukwu & His Philosophers National
                                     'tag_release'  Nigeria Special: Modern Highlife, Afro-Sounds & Nigerian Blues 1970-76
                                       'tag_title'  Okwukwe Na Nchekwube
                                             'bpm'  121.5
                                    'search_title'  'na':2 'nchekwube':3 'okwukwe':1
                                   'search_artist'  'celestine':1 'his':3 'national':5 'philosophers':4 'ukwu':2
                                  'search_release'  '1970':12 '197076':14 '76':13 'afro':7 'afrosounds':9 'blues':11 'highlife':5,6 'modern':4 'nigeria':1 'nigerian':10 'sounds':8 'special':2,3
                                     'search_rest'  '00instruments':1 '102':16 '2008':14,15 'africa':25 'afro':10 'artists':4 'blues':13 'celestine':17 'classical':2 'highlife':8,9 'his':19 'loc':24 'modern':7 'national':21 'nchekwube':23 'nigeria':5 'nigerian':12 'okwukwe':22 'philosophers':20 'sounds':11 'special':6 'ukwu':18 'various':3
                                    'search_combo'  '00instruments':23 '102':38 '1970':20C '197076':22C '2008':36,37 '76':21C 'africa':47 'afro':15C,32 'afrosounds':17C 'artists':26 'blues':19C,35 'celestine':4B,39 'classical':24 'highlife':13C,14C,30,31 'his':6B,41 'loc':46 'modern':12C,29 'na':2A 'national':8B,43 'nchekwube':3A,45 'nigeria':9C,27 'nigerian':18C,34 'okwukwe':1A,44 'philosophers':7B,42 'sounds':16C,33 'special':10C,11C,28 'ukwu':5B,40 'various':25
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['african', 'nigeria', 'highlife', 'world', 'africa']
                                        'tag_date'  1974
                                     'discogstags'  ['highlife', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621629061.7692327  (2021-05-21 22:31:01)
                             'size'  15022273