======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '351'
                                          'artist'  'Bola'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'O,Chuma'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['idm', 'ambient', 'electronic', 'electronica', 'downtempo']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-unsorted;set-pl-mor'
                                             'bpm'  '84.000'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '84.000'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-unsorted', 'set-pl-mor']
'TIT2' (Title/songname/content description)         'O,Chuma'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bola'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['idm', 'ambient', 'electronic', 'electronica', 'downtempo']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.59 dB'
'TXXX:replaygain_track_peak'                        '0.523114'

========================== row from database ==========================
                                              'id'  1329712
                                            'path'  /data/Music/Bulk/00poprockelectronic/Bola/Fyuti/Bola - Fyuti - 07 - O,Chuma.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  351
                                           'genre'  electronic-unsorted;set-pl-mor
                                        'filesize'  8425344
                                           'mtime'  1620352778
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Fyuti Fyuti 07 electronic unsorted;set pl mor
                                      'tag_artist'  Bola
                                     'tag_release'  None
                                       'tag_title'  O,Chuma
                                             'bpm'  84.0
                                    'search_title'  'chuma':2,4 'o':1,3
                                   'search_artist'  'bola':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'electronic':3 'fyuti':2 'mor':9 'pl':8 'set':5,7 'unsorted':4,6
                                    'search_combo'  '00poprockelectronic':6 'bola':5B 'chuma':2A,4A 'electronic':8 'fyuti':7 'mor':14 'o':1A,3A 'pl':13 'set':10,12 'unsorted':9,11
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', '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-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['idm', 'ambient', 'electronic', 'electronica', 'downtempo']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620352778.2102616  (2021-05-07 03:59:38)
                             'size'  8425344