======================== unified (from filesystem) ========================
                                         'bitrate'  '126.651'
                                        'duration'  '192'
                                          'artist'  'Woods of Trees'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Hello Kitty (Black Metal)'
                                           'quals'  ("['Q-HAP-1', 'Q-UNU-2', 'q-syn-2', 'q-bass-3', 'q-busy-4', 'q-grit-4', "
 "'q-play-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'q-chart-1', 'q-drums-4', 'q-other-3', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['black metal', 'comedy', 'comedy black metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '137.0'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '137.0'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TIT2' (Title/songname/content description)         'Hello Kitty (Black Metal)'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Woods of Trees'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.20.100'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['black metal', 'comedy', 'comedy black metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.12 dB'
'TXXX:replaygain_track_peak'                        '0.598905'

========================== row from database ==========================
                                              'id'  1387444
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Woods Of Trees - Hello Kitty (Black Metal)-RyyRH2shfCw.mp3
                                         'working'  None
                                         'bitrate'  126
                                    'duration_sec'  192
                                           'genre'  eid-metal-black
                                        'filesize'  3044626
                                           'mtime'  1620301976
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Of RyyRH2shfCw eid metal black
                                      'tag_artist'  Woods of Trees
                                     'tag_release'  None
                                       'tag_title'  Hello Kitty (Black Metal)
                                             'bpm'  137.0
                                    'search_title'  'black':3,4 'hello':1 'kitty':2 'metal':5,6
                                   'search_artist'  'of':2 'trees':3 'woods':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'black':11 'cw':14 'eid':9 'files':5,6 'loose':3,4 'metal':10 'of':7 'rh2shf':13 'ryy':12 'ryyrh2shfcw':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 'black':3A,4A,20 'cw':23 'eid':18 'files':14,15 'hello':1A 'kitty':2A 'loose':12,13 'metal':5A,6A,19 'of':8B,16 'rh2shf':22 'ryy':21 'ryyrh2shfcw':17 'trees':9B 'unsorted':11 'woods':7B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['black metal', 'comedy', 'comedy black metal']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620301976.3707592  (2021-05-06 13:52:56)
                             'size'  3044626