======================== unified (from filesystem) ========================
                                         'bitrate'  '201.227'
                                        'duration'  '322'
                                          'artist'  'Lamb'
                                     'text_people'  ''
                                         'release'  'What Sound'
                                           'title'  'Small'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', "
 "'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', 'Q-CHART-4', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', 'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['electronica', 'electronic', 'female vocalists', 'trip hop', 'chillout']"
                                     'discogstags'  "['leftfield', 'trip hop', 'downtempo', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '92.8'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'What Sound'
'TBPM' (BPM (beats per minute))                     '92.8'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2001'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Small'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lamb'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '4'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['leftfield', 'trip hop', 'downtempo', 'electronic']
'TXXX:lastfmtags'                                   ['electronica', 'electronic', 'female vocalists', 'trip hop', 'chillout']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-4.94 dB'
'TXXX:replaygain_track_peak'                        '1.198705'

========================== row from database ==========================
                                              'id'  1482378
                                            'path'  /data/Music/Bulk/00poprockelectronic/2001 - What Sound/07 - Small.mp3
                                         'working'  None
                                         'bitrate'  201
                                    'duration_sec'  322
                                           'genre'  electronic-unsorted
                                        'filesize'  8197921
                                           'mtime'  1620565795
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2001 07 electronic unsorted
                                      'tag_artist'  Lamb
                                     'tag_release'  What Sound
                                       'tag_title'  Small
                                             'bpm'  92.8
                                    'search_title'  'small':1
                                   'search_artist'  'lamb':1
                                  'search_release'  'sound':2 'what':1
                                     'search_rest'  '00poprockelectronic':1 '2001':2 'electronic':3 'unsorted':4
                                    'search_combo'  '00poprockelectronic':5 '2001':6 'electronic':7 'lamb':2B 'small':1A 'sound':4C 'unsorted':8 'what':3C
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-4', 'q-drums-4', 'Q-SYN-2', 'q-other-2', 'Q-BUSY-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['electronica', 'electronic', 'female vocalists', 'trip hop', 'chillout']
                                        'tag_date'  2001
                                     'discogstags'  ['leftfield', 'trip hop', 'downtempo', 'electronic']

============================== file details ==============================
                                           'mtime'  1620565794.68215  (2021-05-09 15:09:54)
                             'size'  8197921