======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '285'
                                          'artist'  'Dada Life'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Cookies With A Smile'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-3']")
                                      'lastfmtags'  "['house', 'electro', 'electronic', 'electro house', 'tech house']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '128.251'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '128.251'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Cookies With A Smile'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dada Life'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['house', 'electro', 'electronic', 'electro house', 'tech house']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.41 dB'
'TXXX:replaygain_track_peak'                        '0.423169'

========================== row from database ==========================
                                              'id'  1456479
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/00mixable/Unsorted/dada-life-cookies-with-a-smile.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  285
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  6858983
                                           'mtime'  1620558243
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 00mixable Unsorted dada life cookies with smile electronic generic or radio dance
                                      'tag_artist'  Dada Life
                                     'tag_release'  None
                                       'tag_title'  Cookies With A Smile
                                             'bpm'  128.251
                                    'search_title'  'a':3 'cookies':1 'smile':4 'with':2
                                   'search_artist'  'dada':1 'life':2
                                  'search_release'  
                                     'search_rest'  '00mixable':5 '00poprockelectronic':1 'cookies':9 'dada':7 'dance':3 'electronic':12 'generic':2 'life':8 'or':13 'radio':14 'smile':11 'trapbeat':4 'unsorted':6 'with':10
                                    'search_combo'  '00mixable':11 '00poprockelectronic':7 'a':3A 'cookies':1A,15 'dada':5B,13 'dance':9 'electronic':18 'generic':8 'life':6B,14 'or':19 'radio':20 'smile':4A,17 'trapbeat':10 'unsorted':12 'with':2A,16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['house', 'electro', 'electronic', 'electro house', 'tech house']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620558243.403223  (2021-05-09 13:04:03)
                             'size'  6858983