======================== unified (from filesystem) ========================
                                         'bitrate'  '181.347'
                                        'duration'  '302'
                                          'artist'  'Public Enemy'
                                     'text_people'  ''
                                         'release'  'It Takes a Nation of Millions'
                                           'title'  'Rebel Without a Pause'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-4', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['old school', 'political', 'hip hop', 'rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '99.861'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'It Takes a Nation of Millions'
'TBPM' (BPM (beats per minute))                     '99.861'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         'Rebel Without a Pause'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Public Enemy'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '4'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['old school', 'political', 'hip hop', 'rap']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.80 dB'
'TXXX:replaygain_track_peak'                        '0.798097'

========================== row from database ==========================
                                              'id'  719257
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Public Enemy/MBZ;#Public Enemy;#It Takes a Nation of Millions to Hold Us Back;#14;#Rebel Without a Pause.mp3
                                         'working'  None
                                         'bitrate'  181
                                    'duration_sec'  302
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  6870572
                                           'mtime'  1620592427
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism MBZ;#Public Enemy;#It to Hold Us Back;#14;#Rebel hip hop or rnb or rap or turntablism
                                      'tag_artist'  Public Enemy
                                     'tag_release'  It Takes a Nation of Millions
                                       'tag_title'  Rebel Without a Pause
                                             'bpm'  99.861
                                    'search_title'  'a':3 'pause':4 'rebel':1 'without':2
                                   'search_artist'  'enemy':2 'public':1
                                  'search_release'  'a':3 'it':1 'millions':6 'nation':4 'of':5 'takes':2
                                     'search_rest'  '14':17,20 'back':16,19 'enemy':9,11 'hip':22 'hiphop':1 'hold':14 'hop':23 'it':10,12 'mbz':5,7 'or':24 'public':6,8 'rap':2 'rebel':18,21 'rnb':3 'to':13 'turntablism':4 'us':15
                                    'search_combo'  '14':29,32 'a':3A,9C 'back':28,31 'enemy':6B,21,23 'hip':34 'hiphop':13 'hold':26 'hop':35 'it':7C,22,24 'mbz':17,19 'millions':12C 'nation':10C 'of':11C 'or':36 'pause':4A 'public':5B,18,20 'rap':14 'rebel':1A,30,33 'rnb':15 'takes':8C 'to':25 'turntablism':16 'us':27 'without':2A
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-4', 'q-vocals-3', '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-3', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['old school', 'political', 'hip hop', 'rap']
                                        'tag_date'  1988
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592427.3133352  (2021-05-09 22:33:47)
                             'size'  6870572