======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '359'
                                          'artist'  'Neon Genesis Evangelion'
                                     'text_people'  ''
                                         'release'  'N'
                                           'title'  'Classical Symphony'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'japanese', 'anime', 'instrumental', 'j-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '87.219'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'N'
'TBPM' (BPM (beats per minute))                     '87.219'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Classical Symphony'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Neon Genesis Evangelion'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soundtrack', 'japanese', 'anime', 'instrumental', 'j-pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.12 dB'
'TXXX:replaygain_track_peak'                        '0.864524'

========================== row from database ==========================
                                              'id'  257880
                                            'path'  /data/Music/Bulk/0soundtrack/Neon Genesis Evangelion/Neon Genesis Evangelion__N__cifsa37d.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  359
                                           'genre'  soundtrack-video
                                        'filesize'  5750482
                                           'mtime'  1620333767
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Evangelion__N__cifsa37d soundtrack video
                                      'tag_artist'  Neon Genesis Evangelion
                                     'tag_release'  N
                                       'tag_title'  Classical Symphony
                                             'bpm'  87.219
                                    'search_title'  'classical':1 'symphony':2
                                   'search_artist'  'evangelion':3 'genesis':2 'neon':1
                                  'search_release'  'n':1
                                     'search_rest'  '0soundtrack':1 'cifsa37d':4 'evangelion':2 'n':3 'soundtrack':5 'video':6
                                    'search_combo'  '0soundtrack':7 'cifsa37d':10 'classical':1A 'evangelion':5B,8 'genesis':4B 'n':6C,9 'neon':3B 'soundtrack':11 'symphony':2A 'video':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'japanese', 'anime', 'instrumental', 'j-pop']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620333767.2475622  (2021-05-06 22:42:47)
                             'size'  5750482