======================== unified (from filesystem) ========================
                                         'bitrate'  '176.195'
                                        'duration'  '100'
                                          'artist'  'Public Enemy'
                                     'text_people'  ''
                                         'release'  'It Takes a Nation of Millions'
                                           'title'  'Countdown to Armageddon'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-4', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['old school', 'political', 'hip hop', 'rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '145.895'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'It Takes a Nation of Millions'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         'Countdown to Armageddon'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Public Enemy'
'TRCK' (Track number/Position in set)               '1'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.91 dB'
'TXXX:replaygain_track_peak'                        '0.413933'

========================== row from database ==========================
                                              'id'  719683
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Public Enemy/MBZ;#Public Enemy;#It Takes a Nation of Millions to Hold Us Back;#01;#Countdown to Armageddon.mp3
                                         'working'  None
                                         'bitrate'  176
                                    'duration_sec'  100
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  2221487
                                           'mtime'  1620592427
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism MBZ;#Public Enemy;#It Hold Us Back;#01;#Countdown hip hop or rnb or rap or turntablism
                                      'tag_artist'  Public Enemy
                                     'tag_release'  It Takes a Nation of Millions
                                       'tag_title'  Countdown to Armageddon
                                             'bpm'  145.895
                                    'search_title'  'armageddon':3 'countdown':1 'to':2
                                   'search_artist'  'enemy':2 'public':1
                                  'search_release'  'a':3 'it':1 'millions':6 'nation':4 'of':5 'takes':2
                                     'search_rest'  '01':16,19 'back':15,18 'countdown':17,20 'enemy':9,11 'hip':21 'hiphop':1 'hold':13 'hop':22 'it':10,12 'mbz':5,7 'or':23 'public':6,8 'rap':2 'rnb':3 'turntablism':4 'us':14
                                    'search_combo'  '01':27,30 'a':8C 'armageddon':3A 'back':26,29 'countdown':1A,28,31 'enemy':5B,20,22 'hip':32 'hiphop':12 'hold':24 'hop':33 'it':6C,21,23 'mbz':16,18 'millions':11C 'nation':9C 'of':10C 'or':34 'public':4B,17,19 'rap':13 'rnb':14 'takes':7C 'to':2A 'turntablism':15 'us':25
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-4', 'q-vocals-4', '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-1', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['old school', 'political', 'hip hop', 'rap']
                                        'tag_date'  1988
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592427.175723  (2021-05-09 22:33:47)
                             'size'  2221487