======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '288'
                                          'artist'  'Death'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Zero-Tolerance'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['progressive death metal', 'metal', 'death metal', 'progressive metal', "
 "'technical death metal']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '117.808'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '117.808'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Zero-Tolerance'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Death'
'TXXX:Mp3gain_minmax'                               '090,187'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['progressive death metal',
 'metal',
 'death metal',
 'progressive metal',
 'technical death metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.36 dB'
'TXXX:replaygain_track_peak'                        '0.447806'

========================== row from database ==========================
                                              'id'  1395596
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Death/Death-Zero-Tolerance.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  288
                                           'genre'  eid-metal-death
                                        'filesize'  4042371
                                           'mtime'  1620301898
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal eid metal death
                                      'tag_artist'  Death
                                     'tag_release'  None
                                       'tag_title'  Zero-Tolerance
                                             'bpm'  117.808
                                    'search_title'  'tolerance':2 'zero':1 'zerotolerance':3
                                   'search_artist'  'death':1
                                  'search_release'  
                                     'search_rest'  '00dwimp':1 '00metal':2 'death':5 'eid':3 'metal':4
                                    'search_combo'  '00dwimp':5 '00metal':6 'death':4B,9 'eid':7 'metal':8 'tolerance':2A 'zero':1A 'zerotolerance':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['progressive death metal', 'metal', 'death metal', 'progressive metal', 'technical death metal']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620301898.1633031  (2021-05-06 13:51:38)
                             'size'  4042371