======================== unified (from filesystem) ========================
                                         'bitrate'  '141.736'
                                        'duration'  '258'
                                          'artist'  'Terauchi Takeshi and His Blue Jeans'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'La Cumparsita'
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', '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-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-japan'
                                             'bpm'  '106.029'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '106.029'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-japan'
'TIT2' (Title/songname/content description)         'La Cumparsita'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Terauchi Takeshi and His Blue Jeans'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.725238'

========================== row from database ==========================
                                              'id'  1390796
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Japanese/Terauchi Takeshi and His Blue Jeans - La Cumparsita.mp3
                                         'working'  None
                                         'bitrate'  141
                                    'duration_sec'  258
                                           'genre'  loc-asia-japan
                                        'filesize'  4582853
                                           'mtime'  1620586943
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia Japanese loc asia japan
                                      'tag_artist'  Terauchi Takeshi and His Blue Jeans
                                     'tag_release'  None
                                       'tag_title'  La Cumparsita
                                             'bpm'  106.029
                                    'search_title'  'cumparsita':2 'la':1
                                   'search_artist'  'and':3 'blue':5 'his':4 'jeans':6 'takeshi':2 'terauchi':1
                                  'search_release'  
                                     'search_rest'  '00asia':1 'asia':4 'japan':5 'japanese':2 'loc':3
                                    'search_combo'  '00asia':9 'and':5B 'asia':12 'blue':7B 'cumparsita':2A 'his':6B 'japan':13 'japanese':10 'jeans':8B 'la':1A 'loc':11 'takeshi':4B 'terauchi':3B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586943.0790155  (2021-05-09 21:02:23)
                             'size'  4582853