======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '328'
                                          'artist'  'X JAPAN'
                                     'text_people'  ''
                                         'release'  'DAHLIA'
                                           'title'  'Rusty Nail'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['heavy metal', 'visual kei', 'metal', 'japanese', 'j rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan-jrock-visualkei;set-pl-sced'
                                             'bpm'  '116.587'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000DBF 00000D02 00002B92'
'COMM:iTunNORM:eng'                                 (' 00000DBF 00000D02 00002B92 00002D44 000493F7 000493F7 00006F5B 00007989 '
 '00035BA5 0001119E')
'TALB' (Album/Movie/Show title)                     'DAHLIA'
'TBPM' (BPM (beats per minute))                     '116.587'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan-jrock-visualkei', 'set-pl-sced']
'TDRC' (Recording time)                             '1996'
'TENC' (Encoded by)                                 'nkn1983 for #AsianMusic@Rizon.net'
'TIT2' (Title/songname/content description)         'Rusty Nail'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'X JAPAN'
'TPE2' (Band/orchestra/accompaniment)               'X JAPAN'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['heavy metal', 'visual kei', 'metal', 'japanese', 'j rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.26 dB'
'TXXX:replaygain_track_peak'                        '0.513974'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='http://asianmusic.unberwoot.net')

========================== row from database ==========================
                                              'id'  922391
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/X JAPAN/[1996] DAHLIA/04 Rusty Nail.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  328
                                           'genre'  loc-asia-japan-jrock-visualkei;set-pl-sced
                                        'filesize'  13170111
                                           'mtime'  1623430483
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia [1996] 04 loc asia japan jrock visualkei;set pl sced
                                      'tag_artist'  X JAPAN
                                     'tag_release'  DAHLIA
                                       'tag_title'  Rusty Nail
                                             'bpm'  116.587
                                    'search_title'  'nail':2 'rusty':1
                                   'search_artist'  'japan':2 'x':1
                                  'search_release'  'dahlia':1
                                     'search_rest'  '00asia':1 '1996':2,3 'asia':5 'japan':6 'jrock':7 'loc':4 'pl':12 'sced':13 'set':9,11 'visualkei':8,10
                                    'search_combo'  '00asia':6 '1996':7,8 'asia':10 'dahlia':5C 'japan':4B,11 'jrock':12 'loc':9 'nail':2A 'pl':17 'rusty':1A 'sced':18 'set':14,16 'visualkei':13,15 'x':3B
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['heavy metal', 'visual kei', 'metal', 'japanese', 'j rock']
                                        'tag_date'  1996
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1623430483.3624275  (2021-06-11 18:54:43)
                             'size'  13170111