======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '442'
                                          'artist'  'King Crimson'
                                     'text_people'  ''
                                         'release'  'Prog Rock Essentials'
                                           'title'  '21st Century Schizoid Man (Including "Mirrors")'
                                           'quals'  ("['Q-SYN-1', 'Q-UNU-2', 'Q-BUSY-3', 'Q-GRIT-2', 'q-bass-4', 'Q-JZFKS-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'Q-PLAY-3', "
 "'Q-CHART-3', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2021'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '96.0'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Prog Rock Essentials'
'TBPM' (BPM (beats per minute))                     '96.0'
'TDRC' (Recording time)                             '2021'
'TIT2' (Title/songname/content description)         '21st Century Schizoid Man (Including "Mirrors")'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'King Crimson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '3'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-5.31 dB'
'TXXX:replaygain_track_peak'                        '0.986327'

========================== row from database ==========================
                                              'id'  1536842
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00newwave-postpunk/Prog Rock Essentials (2021)/01. King Crimson - 21st Century Schizoid Man (Including _Mirrors_).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  442
                                           'genre'  
                                        'filesize'  17913243
                                           'mtime'  1648486176
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00newwave postpunk (2021) 01. _Mirrors_)
                                      'tag_artist'  King Crimson
                                     'tag_release'  Prog Rock Essentials
                                       'tag_title'  21st Century Schizoid Man (Including "Mirrors")
                                             'bpm'  96.0
                                    'search_title'  '21st':1 'century':2 'including':5,6 'man':4 'mirrors':7,8 'schizoid':3
                                   'search_artist'  'crimson':2 'king':1
                                  'search_release'  'essentials':3 'prog':1 'rock':2
                                     'search_rest'  '00newwave':4 '00poprockelectronic':1 '01':8,9 '2021':6,7 'disco':3 'mirrors':10,11 'postpunk':5 'waves':2
                                    'search_combo'  '00newwave':17 '00poprockelectronic':14 '01':21,22 '2021':19,20 '21st':1A 'century':2A 'crimson':10B 'disco':16 'essentials':13C 'including':5A,6A 'king':9B 'man':4A 'mirrors':7A,8A,23,24 'postpunk':18 'prog':11C 'rock':12C 'schizoid':3A 'waves':15
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-SYN-1', 'Q-UNU-2', 'Q-BUSY-3', 'Q-GRIT-2', 'q-bass-4', 'Q-JZFKS-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'Q-PLAY-3', 'Q-CHART-3', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-1']
                                      'lastfmtags'  []
                                        'tag_date'  2021
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1648486175.7339716  (2022-03-28 18:49:35)
                             'size'  17913243