======================== unified (from filesystem) ========================
                                         'bitrate'  '316.029'
                                        'duration'  '238'
                                          'artist'  'Guitar Wolf'
                                     'text_people'  ''
                                         'release'  'Dead Rock'
                                           'title'  'Ikebukuro Tiger'
                                           'quals'  ("['Q-OLDST-3', 'Q-LOCALNESS-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', "
 "'Q-HHRNBTT-1', 'q-bass-3', 'q-drums-3', 'q-other-4', 'q-piano-1', "
 "'q-vocals-2', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-3', 'Q-PLAY-2', 'Q-CHART-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['garage punk', 'punk', 'j-rock', 'japanese', 'garage rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;loc-asia-japan'
                                             'bpm'  '145.7'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Dead Rock'
'TBPM' (BPM (beats per minute))                     '145.7'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'loc-asia-japan']
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Ikebukuro Tiger'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Guitar Wolf'
'TPUB' (Publisher)                                  'Ghan Shin'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['garage punk', 'punk', 'j-rock', 'japanese', 'garage rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.48 dB'
'TXXX:replaygain_track_peak'                        '0.252254'

========================== row from database ==========================
                                              'id'  1483642
                                            'path'  /data/Music/Bulk/00localcharacter/Guitar Wolf/Dead Rock (2007)/10 - Ikebukuro Tiger.mp3
                                         'working'  None
                                         'bitrate'  316
                                    'duration_sec'  238
                                           'genre'  rock-gr-garage;loc-asia-japan
                                        'filesize'  9419789
                                           'mtime'  1620385915
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter (2007) 10 rock gr garage;loc asia japan
                                      'tag_artist'  Guitar Wolf
                                     'tag_release'  Dead Rock
                                       'tag_title'  Ikebukuro Tiger
                                             'bpm'  145.7
                                    'search_title'  'ikebukuro':1 'tiger':2
                                   'search_artist'  'guitar':1 'wolf':2
                                  'search_release'  'dead':1 'rock':2
                                     'search_rest'  '2007':1,2 'asia':9 'garage':5,7 'gr':4 'japan':10 'loc':6,8 'rock':3
                                    'search_combo'  '2007':7,8 'asia':15 'dead':5C 'garage':11,13 'gr':10 'guitar':3B 'ikebukuro':1A 'japan':16 'loc':12,14 'rock':6C,9 'tiger':2A 'wolf':4B
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  ['garage punk', 'punk', 'j-rock', 'japanese', 'garage rock']
                                        'tag_date'  2007
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620385915.0190032  (2021-05-07 13:11:55)
                             'size'  9419789