======================== unified (from filesystem) ========================
                                         'bitrate'  '134.322'
                                        'duration'  '258'
                                          'artist'  'Chiemi Manabe'
                                     'text_people'  ''
                                         'release'  'Dimitri - PopTropic'
                                           'title'  'Untotooku (真鍋ちえみ - うんととおく)'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['japanese', 'j-pop', 'music for sociologists']"
                                     'discogstags'  "['electronic', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc'
                                             'bpm'  '103.9'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - PopTropic'
'TBPM' (BPM (beats per minute))                     '103.9'
'TCON' (Content type, a.k.a. Genre)                 'loc'
'TIT2' (Title/songname/content description)         'Untotooku (真鍋ちえみ - うんととおく)'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Chiemi Manabe'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'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'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'synth-pop']
'TXXX:lastfmtags'                                   ['japanese', 'j-pop', 'music for sociologists']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.76 dB'
'TXXX:replaygain_track_peak'                        '0.627054'
'TXXX:youtube'                                      ' うんととおく)-4BcacNcpQ3c'

========================== row from database ==========================
                                              'id'  1477461
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/PopTropic/Chiemi Manabe - Untotooku (真鍋ちえみ - うんととおく)-4BcacNcpQ3c.mp3
                                         'working'  None
                                         'bitrate'  134
                                    'duration_sec'  258
                                           'genre'  loc
                                        'filesize'  4349183
                                           'mtime'  1678926266
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 4BcacNcpQ3c loc
                                      'tag_artist'  Chiemi Manabe
                                     'tag_release'  Dimitri - PopTropic
                                       'tag_title'  Untotooku (真鍋ちえみ - うんととおく)
                                             'bpm'  103.9
                                    'search_title'  'untotooku':1,8 'うんととおく':6,7 '真鍋tiemi':4,5 '真鍋ちえみ':2,3
                                   'search_artist'  'chiemi':1 'manabe':2
                                  'search_release'  'dimitri':1 'pop':3 'poptropic':2 'tropic':4
                                     'search_rest'  '4bcac':3 '4bcacncpq3c':1 'loc':2 'ncp':4 'q3c':5
                                    'search_combo'  '4bcac':17 '4bcacncpq3c':15 'chiemi':9B 'dimitri':11C 'loc':16 'manabe':10B 'ncp':18 'pop':13C 'poptropic':12C 'q3c':19 'tropic':14C 'untotooku':1A,8A 'うんととおく':6A,7A '真鍋tiemi':4A,5A '真鍋ちえみ':2A,3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', 'Q-CHART-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'Q-MIXBEAT-2']
                                      'lastfmtags'  ['japanese', 'j-pop', 'music for sociologists']
                                        'tag_date'  
                                     'discogstags'  ['electronic', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1678926265.6214824  (2023-03-16 01:24:25)
                             'size'  4349183