======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '224'
                                          'artist'  'Takako Minekawa & Dymaxion'
                                     'text_people'  ''
                                         'release'  'Maxi On!'
                                           'title'  'Lullaby of gray'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['japanese', 'electronic', 'shibuya-kei', 'j-pop', 'female vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-japan'
                                             'bpm'  '108.008'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Maxi On!'
'TBPM' (BPM (beats per minute))                     '108.008'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-japan'
'TIT2' (Title/songname/content description)         'Lullaby of gray'
'TKEY' (Initial key)                                '11A'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Takako Minekawa & Dymaxion'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['japanese', 'electronic', 'shibuya-kei', 'j-pop', 'female vocalists']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.27 dB'
'TXXX:replaygain_track_peak'                        '0.495645'

========================== row from database ==========================
                                              'id'  730512
                                            'path'  /data/Music/Bulk/00localcharacter/takako minekawa & dymaxion - maxi-on!/02 Lullaby of gray.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  224
                                           'genre'  loc-asia-japan
                                        'filesize'  3585920
                                           'mtime'  1637330179
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter takako minekawa dymaxion on! 02 loc asia japan
                                      'tag_artist'  Takako Minekawa & Dymaxion
                                     'tag_release'  Maxi On!
                                       'tag_title'  Lullaby of gray
                                             'bpm'  108.008
                                    'search_title'  'gray':3 'lullaby':1 'of':2
                                   'search_artist'  'dymaxion':3 'minekawa':2 'takako':1
                                  'search_release'  'maxi':1 'on':2
                                     'search_rest'  'asia':6 'dymaxion':3 'japan':7 'loc':5 'minekawa':2 'on':4 'takako':1
                                    'search_combo'  'asia':14 'dymaxion':6B,11 'gray':3A 'japan':15 'loc':13 'lullaby':1A 'maxi':7C 'minekawa':5B,10 'of':2A 'on':8C,12 'takako':4B,9
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['japanese', 'electronic', 'shibuya-kei', 'j-pop', 'female vocalists']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330178.694128  (2021-11-19 14:56:18)
                             'size'  3585920