======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '285'
                                          'artist'  'Billie Eilish'
                                     'text_people'  ''
                                         'release'  'Bored'
                                           'title'  'Bored'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-3']")
                                      'lastfmtags'  "['indie', 'indie pop', 'electropop', 'pop', 'art pop']"
                                     'discogstags'  "['indie pop', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2017'
                                        'comments'  ''
                                           'genre'  'electronic-we-electropop or synthpop'
                                             'bpm'  '123.1'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Bored'
'TBPM' (BPM (beats per minute))                     '123.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-electropop or synthpop'
'TDOR' (Original release time)                      '2017'
'TDRC' (Recording time)                             '2017'
'TIT2' (Title/songname/content description)         'Bored'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Billie Eilish'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.19.100'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:compatible_brands'                            'isommp42'
'TXXX:discogstags'                                  ['indie pop', 'pop']
'TXXX:lastfmtags'                                   ['indie', 'indie pop', 'electropop', 'pop', 'art pop']
'TXXX:major_brand'                                  'mp42'
'TXXX:minor_version'                                '0'
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.83 dB'
'TXXX:replaygain_track_peak'                        '0.460145'

========================== row from database ==========================
                                              'id'  1405899
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Cozmoe  - 2/Billie Eilish - Bored (A_V CLUB edit).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  285
                                           'genre'  electronic-we-electropop or synthpop
                                        'filesize'  6870243
                                           'mtime'  1620558386
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat Cozmoe 2 (A_V CLUB edit) electronic we electropop synthpop
                                      'tag_artist'  Billie Eilish
                                     'tag_release'  Bored
                                       'tag_title'  Bored
                                             'bpm'  123.1
                                    'search_title'  'bored':1
                                   'search_artist'  'billie':1 'eilish':2
                                  'search_release'  'bored':1
                                     'search_rest'  '00poprockelectronic':1 '2':6 'a':7,9 'club':11 'cozmoe':5 'dance':3 'edit':12,13 'electronic':14 'electropop':16 'generic':2 'synthpop':17 'trapbeat':4 'v':8,10 'we':15
                                    'search_combo'  '00poprockelectronic':5 '2':10 'a':11,13 'billie':2B 'bored':1A,4C 'club':15 'cozmoe':9 'dance':7 'edit':16,17 'eilish':3B 'electronic':18 'electropop':20 'generic':6 'synthpop':21 'trapbeat':8 'v':12,14 'we':19
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           '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-2', 'q-chart-3', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'indie pop', 'electropop', 'pop', 'art pop']
                                        'tag_date'  2017
                                     'discogstags'  ['indie pop', 'pop']

============================== file details ==============================
                                           'mtime'  1620558386.0832982  (2021-05-09 13:06:26)
                             'size'  6870243