======================== unified (from filesystem) ========================
                                         'bitrate'  '182.128'
                                        'duration'  '301'
                                          'artist'  'LEMS'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sakura Waltz'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-2', 'q-drums-3', 'q-other-3', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-3', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['jazz hop', 'hip-hop', 'japanese', 'beats', 'jazz-hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '102.489'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '102.489'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Sakura Waltz'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'LEMS'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz hop', 'hip-hop', 'japanese', 'beats', 'jazz-hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.415131'

========================== row from database ==========================
                                              'id'  720055
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/lems-sakura-waltz.mp3
                                         'working'  None
                                         'bitrate'  182
                                    'duration_sec'  301
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  6878478
                                           'mtime'  1620586463
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism lems sakura waltz hip hop or rnb or rap or turntablism
                                      'tag_artist'  LEMS
                                     'tag_release'  None
                                       'tag_title'  Sakura Waltz
                                             'bpm'  102.489
                                    'search_title'  'sakura':1 'waltz':2
                                   'search_artist'  'lems':1
                                  'search_release'  
                                     'search_rest'  'hip':8 'hiphop':1 'hop':9 'lems':5 'or':10 'rap':2 'rnb':3 'sakura':6 'turntablism':4 'waltz':7
                                    'search_combo'  'hip':11 'hiphop':4 'hop':12 'lems':3B,8 'or':13 'rap':5 'rnb':6 'sakura':1A,9 'turntablism':7 'waltz':2A,10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz hop', 'hip-hop', 'japanese', 'beats', 'jazz-hop']
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586463.496531  (2021-05-09 20:54:23)
                             'size'  6878478