======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '303'
                                          'artist'  'Queen'
                                     'text_people'  ''
                                         'release'  'The Works'
                                           'title'  "Machines (or 'Back to Humans')"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']"
                                     'discogstags'  "['rock', 'pop rock', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '111.211'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Works'
'TBPM' (BPM (beats per minute))                     '111.211'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         "Machines (or 'Back to Humans')"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Queen'
'TRCK' (Track number/Position in set)               '5'
'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', 'synth-pop']
'TXXX:lastfmtags'                                   ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.80 dB'
'TXXX:replaygain_track_peak'                        '0.595917'

========================== row from database ==========================
                                              'id'  1520795
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0264 Queen - The Works/The Works-05-Machines (or _Back to Humans_).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  303
                                           'genre'  rock-cppex-classic
                                        'filesize'  4853239
                                           'mtime'  1636039386
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0264 05 _Back Humans_) rock cppex classic
                                      'tag_artist'  Queen
                                     'tag_release'  The Works
                                       'tag_title'  Machines (or 'Back to Humans')
                                             'bpm'  111.211
                                    'search_title'  'back':4,5 'humans':7,8 'machines':1 'or':2,3 'to':6
                                   'search_artist'  'queen':1
                                  'search_release'  'the':1 'works':2
                                     'search_rest'  '00poprockelectronic':1 '0264':5 '1000':4 'album':2 'back':6 'classic':11 'cppex':10 'humans':7,8 'rock':9 'top':3
                                    'search_combo'  '00poprockelectronic':12 '0264':16 '1000':15 'album':13 'back':4A,5A,17 'classic':22 'cppex':21 'humans':7A,8A,18,19 'machines':1A 'or':2A,3A 'queen':9B 'rock':20 'the':10C 'to':6A 'top':14 'works':11C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  9B
                                           '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-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1984
                                     'discogstags'  ['rock', 'pop rock', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1636039386.226269  (2021-11-04 16:23:06)
                             'size'  4853239