======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '232'
                                          'artist'  'Queen And David Bowie'
                                     'text_people'  ''
                                         'release'  'Platinum 80s (disc 1)'
                                           'title'  'under pressure'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'q-play-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'q-chart-4', 'q-drums-3', 'q-other-2', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['classic rock', 'rock', '80s', 'glam rock', 'queen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '113.389'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Platinum 80s (disc 1)'
'TBPM' (BPM (beats per minute))                     '113.389'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'under pressure'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Queen And David Bowie'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic rock', 'rock', '80s', 'glam rock', 'queen']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.60 dB'
'TXXX:replaygain_track_peak'                        '0.443283'

========================== row from database ==========================
                                              'id'  1416668
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Queen And David Bowie/Queen And David Bowie__Platinum 80s (disc 1)__cifsb592.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  232
                                           'genre'  rock-cppex-classic
                                        'filesize'  5570464
                                           'mtime'  1636038777
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy Bowie__Platinum 1)__cifsb592 rock cppex classic
                                      'tag_artist'  Queen And David Bowie
                                     'tag_release'  Platinum 80s (disc 1)
                                       'tag_title'  under pressure
                                             'bpm'  113.389
                                    'search_title'  'pressure':2 'under':1
                                   'search_artist'  'and':2 'bowie':4 'david':3 'queen':1
                                  'search_release'  '1':5,6 '80s':2 'disc':3,4 'platinum':1
                                     'search_rest'  '1':4,6 'bowie':2 'cifsb592':5,7 'classic':10 'classicprogpsy':1 'cppex':9 'platinum':3 'rock':8
                                    'search_combo'  '1':11C,12C,16,18 '80s':8C 'and':4B 'bowie':6B,14 'cifsb592':17,19 'classic':22 'classicprogpsy':13 'cppex':21 'david':5B 'disc':9C,10C 'platinum':7C,15 'pressure':2A 'queen':3B 'rock':20 'under':1A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', 'rock', '80s', 'glam rock', 'queen']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636038776.7167592  (2021-11-04 16:12:56)
                             'size'  5570464