======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '326'
                                          'artist'  'Fraction'
                                     'text_people'  ''
                                         'release'  'Moon Blood'
                                           'title'  'Sons Come To Birth'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-3', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['progressive rock', 'hard rock', 'psychedelic rock', 'rac', 'psychedelic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '144.1'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Moon Blood'
'TBPM' (BPM (beats per minute))                     '144.1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Sons Come To Birth'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fraction'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['progressive rock', 'hard rock', 'psychedelic rock', 'rac', 'psychedelic']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-2.84 dB'
'TXXX:replaygain_track_peak'                        '0.823290'

========================== row from database ==========================
                                              'id'  1478356
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Fraction - [1971] Moon Blood/04 - Sons Come To Birth.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  326
                                           'genre'  rock-cppex
                                        'filesize'  6533705
                                           'mtime'  1636921650
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy [1971] 04 rock cppex
                                      'tag_artist'  Fraction
                                     'tag_release'  Moon Blood
                                       'tag_title'  Sons Come To Birth
                                             'bpm'  144.1
                                    'search_title'  'birth':4 'come':2 'sons':1 'to':3
                                   'search_artist'  'fraction':1
                                  'search_release'  'blood':2 'moon':1
                                     'search_rest'  '1971':2,3 'classicprogpsy':1 'cppex':5 'rock':4
                                    'search_combo'  '1971':9,10 'birth':4A 'blood':7C 'classicprogpsy':8 'come':2A 'cppex':12 'fraction':5B 'moon':6C 'rock':11 'sons':1A 'to':3A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['progressive rock', 'hard rock', 'psychedelic rock', 'rac', 'psychedelic']
                                        'tag_date'  1971
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636921650.2915976  (2021-11-14 21:27:30)
                             'size'  6533705