======================== unified (from filesystem) ========================
                                         'bitrate'  '120.674'
                                        'duration'  '374'
                                          'artist'  '吉村弘'
                                     'text_people'  ''
                                         'release'  'Dimitri - PopTropic'
                                           'title'  'Water Copy'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-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-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['ambient', 'japanese', 'new age', '4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc'
                                             'bpm'  '137.9'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - PopTropic'
'TBPM' (BPM (beats per minute))                     '137.9'
'TCON' (Content type, a.k.a. Genre)                 'loc'
'TIT2' (Title/songname/content description)         'Water Copy'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               '吉村弘'
'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'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['ambient', 'japanese', 'new age', '4']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.17 dB'
'TXXX:replaygain_track_peak'                        '0.636696'
'TXXX:youtube'                                      '_cnGUT9n5iQ'

========================== row from database ==========================
                                              'id'  1477203
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/PopTropic/吉村弘 - Water Copy-_cnGUT9n5iQ.mp3
                                         'working'  None
                                         'bitrate'  121
                                    'duration_sec'  374
                                           'genre'  loc
                                        'filesize'  5649026
                                           'mtime'  1678926412
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm _cnGUT9n5iQ loc
                                      'tag_artist'  吉村弘
                                     'tag_release'  Dimitri - PopTropic
                                       'tag_title'  Water Copy
                                             'bpm'  137.9
                                    'search_title'  'copy':2 'water':1
                                   'search_artist'  '吉村弘':1
                                  'search_release'  'dimitri':1 'pop':3 'poptropic':2 'tropic':4
                                     'search_rest'  'cn':3 'cngut9n5iq':1 'gut9n5i':4 'loc':2 'q':5
                                    'search_combo'  'cn':10 'cngut9n5iq':8 'copy':2A 'dimitri':4C 'gut9n5i':11 'loc':9 'pop':6C 'poptropic':5C 'q':12 'tropic':7C 'water':1A '吉村弘':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-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-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'Q-MIXBEAT-2']
                                      'lastfmtags'  ['ambient', 'japanese', 'new age', '4']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678926411.7578692  (2023-03-16 01:26:51)
                             'size'  5649026