======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '221'
                                          'artist'  'Yusuf Islam'
                                     'text_people'  ''
                                         'release'  'Yusuf Islam Collection'
                                           'title'  'Father and Son'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'q-syn-2', "
 "'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', 'q-drums-2', "
 "'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['folk', 'singer-songwriter', 'acoustic', 'islam', 'islamic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'ifs-unsorted'
                                             'bpm'  '134.5'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.ARTIST (Artist/performer) b''
                                     
'TALB' (Album/Movie/Show title)                     'Yusuf Islam Collection'
'TBPM' (BPM (beats per minute))                     '134.5'
'TCON' (Content type, a.k.a. Genre)                 'ifs-unsorted'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Father and Son'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Yusuf Islam'
'TPE2' (Band/orchestra/accompaniment)               'Yusuf Islam'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['folk', 'singer-songwriter', 'acoustic', 'islam', 'islamic']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.26 dB'
'TXXX:replaygain_track_peak'                        '0.908165'

========================== row from database ==========================
                                              'id'  1384597
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Yusuf Islam - Father and Son.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  221
                                           'genre'  ifs-unsorted
                                        'filesize'  3737929
                                           'mtime'  1676053001
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] ifs unsorted
                                      'tag_artist'  Yusuf Islam
                                     'tag_release'  Yusuf Islam Collection
                                       'tag_title'  Father and Son
                                             'bpm'  134.5
                                    'search_title'  'and':2 'father':1 'son':3
                                   'search_artist'  'islam':2 'yusuf':1
                                  'search_release'  'collection':3 'islam':2 'yusuf':1
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'ifs':7 'loose':3,4 'unsorted':2
                                    'search_combo'  '00poprockelectronic':9 'and':2A 'collection':8C 'father':1A 'files':13,14 'ifs':15 'islam':5B,7C 'loose':11,12 'son':3A 'unsorted':10 'yusuf':4B,6C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-2']
                                      'lastfmtags'  ['folk', 'singer-songwriter', 'acoustic', 'islam', 'islamic']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1676053000.8513796  (2023-02-10 19:16:40)
                             'size'  3737929