======================== unified (from filesystem) ========================
                                         'bitrate'  '188.291'
                                        'duration'  '139'
                                          'artist'  'Ludwig van Beethoven'
                                     'text_people'  ''
                                         'release'  'YTMND Soundtrack - Volume 09'
                                           'title'  'Moonlight Sonata'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', 'Q-PIANO-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'composers', 'romantic', 'classical', 'classic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '102.2'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'APIC:YTMND'                                        type PictureType.COVER_FRONT (Cover (front)) b'YTMND'
                                     
'COMM:YTMND:eng'                                    "www.ytmnd.com - you're the man now dog!"
'TALB' (Album/Movie/Show title)                     'YTMND Soundtrack - Volume 09'
'TBPM' (BPM (beats per minute))                     '102.2'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Moonlight Sonata'
'TKEY' (Initial key)                                '1B'
'TLEN' (Length)                                     '318641'
'TPE1' (Lead performer(s)/Soloist(s))               'Ludwig van Beethoven'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '09'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'composers', 'romantic', 'classical', 'classic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.04 dB'
'TXXX:replaygain_track_peak'                        '0.613728'

========================== row from database ==========================
                                              'id'  1271813
                                            'path'  /data/Music/Bulk/0soundtrack/Nintendo - YTMND/YTMND Soundtrack - Volume 09/YTMND Soundtrack - Volume 09 - 07 - Beethoven - Moonlight Sonata.mp3
                                         'working'  None
                                         'bitrate'  188
                                    'duration_sec'  139
                                           'genre'  soundtrack-video
                                        'filesize'  3553475
                                           'mtime'  1620333846
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Nintendo 07 soundtrack video
                                      'tag_artist'  Ludwig van Beethoven
                                     'tag_release'  YTMND Soundtrack - Volume 09
                                       'tag_title'  Moonlight Sonata
                                             'bpm'  102.2
                                    'search_title'  'moonlight':1 'sonata':2
                                   'search_artist'  'beethoven':3 'ludwig':1 'van':2
                                  'search_release'  'soundtrack':2 'volume':3 'ytmnd':1
                                     'search_rest'  '0soundtrack':1 'nintendo':2 'soundtrack':3 'video':4
                                    'search_combo'  '0soundtrack':9 'beethoven':5B 'ludwig':3B 'moonlight':1A 'nintendo':10 'sonata':2A 'soundtrack':7C,11 'van':4B 'video':12 'volume':8C 'ytmnd':6C
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'composers', 'romantic', 'classical', 'classic']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620333845.684887  (2021-05-06 22:44:05)
                             'size'  3553475