======================== unified (from filesystem) ========================
                                         'bitrate'  '163.597'
                                        'duration'  '60'
                                          'artist'  'Kuricorder Pops Orchestra'
                                     'text_people'  ''
                                         'release'  'Yotsuba &!'
                                           'title'  'Asagohan wo Taberu [Eating Breakfast]'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fun', 'japanese']"
                                     'discogstags'  "['stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-video;set-pl-mor'
                                             'bpm'  '123.181'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Yotsuba &!'
'TBPM' (BPM (beats per minute))                     '123.181'
'TCON' (Content type, a.k.a. Genre)                 ['soundtrack-video', 'set-pl-mor']
'TIT2' (Title/songname/content description)         'Asagohan wo Taberu [Eating Breakfast]'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kuricorder Pops Orchestra'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Mp3gain_minmax'                               '145,255'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'stage & screen'
'TXXX:lastfmtags'                                   ['fun', 'japanese']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.672758'

========================== row from database ==========================
                                              'id'  390129
                                            'path'  /data/Music/Bulk/0soundtrack/Yotsuba&!_Image_Album/Kuricorder Pops Orchestra - 08 - Asagohan wo Taberu [Eating Breakfast].mp3
                                         'working'  None
                                         'bitrate'  164
                                    'duration_sec'  60
                                           'genre'  soundtrack-video;set-pl-mor
                                        'filesize'  1243130
                                           'mtime'  1640870287
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Yotsuba&!_Image_Album 08 soundtrack video;set pl mor
                                      'tag_artist'  Kuricorder Pops Orchestra
                                     'tag_release'  Yotsuba &!
                                       'tag_title'  Asagohan wo Taberu [Eating Breakfast]
                                             'bpm'  123.181
                                    'search_title'  'asagohan':1 'breakfast':6,7 'eating':4,5 'taberu':3 'wo':2
                                   'search_artist'  'kuricorder':1 'orchestra':3 'pops':2
                                  'search_release'  'yotsuba':1
                                     'search_rest'  '0soundtrack':1 'album':4,7 'image':3,6 'mor':14 'pl':13 'set':10,12 'soundtrack':8 'video':9,11 'yotsuba':2,5
                                    'search_combo'  '0soundtrack':12 'album':15,18 'asagohan':1A 'breakfast':6A,7A 'eating':4A,5A 'image':14,17 'kuricorder':8B 'mor':25 'orchestra':10B 'pl':24 'pops':9B 'set':21,23 'soundtrack':19 'taberu':3A 'video':20,22 'wo':2A 'yotsuba':11C,13,16
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', 'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']
                                      'lastfmtags'  ['fun', 'japanese']
                                        'tag_date'  
                                     'discogstags'  ['stage & screen']

============================== file details ==============================
                                           'mtime'  1640870287.016872  (2021-12-30 14:18:07)
                             'size'  1243130