======================== unified (from filesystem) ========================
                                         'bitrate'  '172.254'
                                        'duration'  '267'
                                          'artist'  'Cypress Hill'
                                     'text_people'  ''
                                         'release'  'Black Sunday'
                                           'title'  "I Ain't Goin' Out Like That"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['alternative', 'rapcore', 'hip hop', 'rap']"
                                     'discogstags'  "['hip hop', 'thug rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  '14'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '100.755'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Black Sunday'
'TBPM' (BPM (beats per minute))                     '100.755'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '1993'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         "I Ain't Goin' Out Like That"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cypress Hill'
'TRCK' (Track number/Position in set)               '02/14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['hip hop', 'thug rap']
'TXXX:lastfmtags'                                   ['alternative', 'rapcore', 'hip hop', 'rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.16 dB'
'TXXX:replaygain_track_peak'                        '0.676627'

========================== row from database ==========================
                                              'id'  1496981
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Cypress Hill/Black Sunday/02-i ain_t goin_ out like that-bdc.mp3
                                         'working'  None
                                         'bitrate'  172
                                    'duration_sec'  267
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  5775569
                                           'mtime'  1620587039
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism 02 ain_t goin_ out like that bdc hip hop or rnb or rap or turntablism
                                      'tag_artist'  Cypress Hill
                                     'tag_release'  Black Sunday
                                       'tag_title'  I Ain't Goin' Out Like That
                                             'bpm'  100.755
                                    'search_title'  'ain':2 'aint':4 'goin':5,6 'i':1 'like':8 'out':7 't':3 'that':9
                                   'search_artist'  'cypress':1 'hill':2
                                  'search_release'  'black':1 'sunday':2
                                     'search_rest'  'ain':5 'bdc':11 'goin':7 'hip':12 'hiphop':1 'hop':13 'like':9 'or':14 'out':8 'rap':2 'rnb':3 't':6 'that':10 'turntablism':4
                                    'search_combo'  'ain':2A,18 'aint':4A 'bdc':24 'black':12C 'cypress':10B 'goin':5A,6A,20 'hill':11B 'hip':25 'hiphop':14 'hop':26 'i':1A 'like':8A,22 'or':27 'out':7A,21 'rap':15 'rnb':16 'sunday':13C 't':3A,19 'that':9A,23 'turntablism':17
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative', 'rapcore', 'hip hop', 'rap']
                                        'tag_date'  1993
                                     'discogstags'  ['hip hop', 'thug rap']

============================== file details ==============================
                                           'mtime'  1620587039.0828075  (2021-05-09 21:03:59)
                             'size'  5775569