======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '216'
                                          'artist'  'Queen'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  'Another One Bites The Dust'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']"
                                     'discogstags'  "['rock', 'pop rock', 'glam']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '109.883'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '109.883'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Another One Bites The Dust'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Queen'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop rock', 'glam']
'TXXX:lastfmtags'                                   ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.31 dB'
'TXXX:replaygain_track_peak'                        '0.600818'

========================== row from database ==========================
                                              'id'  1309380
                                            'path'  /data/Music/Bulk/00poprockelectronic/set/02. Queen - Another One Bites The Dust.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  216
                                           'genre'  rock-cppex-classic
                                        'filesize'  8683520
                                           'mtime'  1636039392
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic set 02. rock cppex classic
                                      'tag_artist'  Queen
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Another One Bites The Dust
                                             'bpm'  109.883
                                    'search_title'  'another':1 'bites':3 'dust':5 'one':2 'the':4
                                   'search_artist'  'queen':1
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 '02':3,4 'classic':7 'cppex':6 'rock':5 'set':2
                                    'search_combo'  '00poprockelectronic':9 '02':11,12 'another':1A 'bites':3A 'classic':15 'cppex':14 'dust':5A 'greatest':7C 'hits':8C 'one':2A 'queen':6B 'rock':13 'set':10 'the':4A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  2000
                                     'discogstags'  ['rock', 'pop rock', 'glam']

============================== file details ==============================
                                           'mtime'  1636039391.8550653  (2021-11-04 16:23:11)
                             'size'  8683520