======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '278'
                                          'artist'  'Mastermind'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Fuck You Bitch (Beep Edit)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['power metal', 'japanese', 'progressive metal', 'drum and bass', "
 "'progressive rock', 'funk']")
                                     'discogstags'  "['electronic', 'drum n bass']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '139.948'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '139.948'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TIT2' (Title/songname/content description)         'Fuck You Bitch (Beep Edit)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mastermind'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'drum n bass']
'TXXX:lastfmtags'                                   ['power metal',
 'japanese',
 'progressive metal',
 'drum and bass',
 'progressive rock',
 'funk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.63 dB'
'TXXX:replaygain_track_peak'                        '0.511828'

========================== row from database ==========================
                                              'id'  1283142
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Mastermind - Fuck You Bitch (Beep Edit).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  278
                                           'genre'  rock-cppex
                                        'filesize'  4454400
                                           'mtime'  1621697732
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] rock cppex
                                      'tag_artist'  Mastermind
                                     'tag_release'  None
                                       'tag_title'  Fuck You Bitch (Beep Edit)
                                             'bpm'  139.948
                                    'search_title'  'beep':4,5 'bitch':3 'edit':6,7 'fuck':1 'you':2
                                   'search_artist'  'mastermind':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'cppex':8 'files':5,6 'loose':3,4 'rock':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':9 'beep':4A,5A 'bitch':3A 'cppex':16 'edit':6A,7A 'files':13,14 'fuck':1A 'loose':11,12 'mastermind':8B 'rock':15 'unsorted':10 'you':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['power metal', 'japanese', 'progressive metal', 'drum and bass', 'progressive rock', 'funk']
                                        'tag_date'  
                                     'discogstags'  ['electronic', 'drum n bass']

============================== file details ==============================
                                           'mtime'  1621697731.8985033  (2021-05-22 17:35:31)
                             'size'  4454400