======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '329'
                                          'artist'  'Toto'
                                     'text_people'  ''
                                         'release'  'Hits of the 80s'
                                           'title'  'Rosanna'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-PLAY-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-chart-4', "
 "'q-drums-3', 'q-other-3', 'q-vocals-3', 'q-mixbeat-2', 'Q-PIANO-2']")
                                      'lastfmtags'  "['80s', 'classic rock', 'progressive rock', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard'
                                             'bpm'  '123.935'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hits of the 80s'
'TBPM' (BPM (beats per minute))                     '123.935'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex', 'set-pl-billboard']
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Rosanna'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Toto'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'classic rock', 'progressive rock', 'pop', 'rock']
'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'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.47 dB'
'TXXX:replaygain_track_peak'                        '0.550281'

========================== row from database ==========================
                                              'id'  1532012
                                            'path'  /data/Music/Bulk/00poprockelectronic/Hits Of The 80_s/Toto - Rosanna.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  329
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard
                                        'filesize'  5284123
                                           'mtime'  1620737217
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Of The 80_s electronic generic or radio unsorted;rock cppex;set pl billboard
                                      'tag_artist'  Toto
                                     'tag_release'  Hits of the 80s
                                       'tag_title'  Rosanna
                                             'bpm'  123.935
                                    'search_title'  'rosanna':1
                                   'search_artist'  'toto':1
                                  'search_release'  '80s':4 'hits':1 'of':2 'the':3
                                     'search_rest'  '00poprockelectronic':1 '80':4 'billboard':19 'cppex':14,16 'electronic':6 'generic':7 'of':2 'or':8 'pl':18 'radio':9 'rock':11,13 's':5 'set':15,17 'the':3 'unsorted':10,12
                                    'search_combo'  '00poprockelectronic':7 '80':10 '80s':6C 'billboard':25 'cppex':20,22 'electronic':12 'generic':13 'hits':3C 'of':4C,8 'or':14 'pl':24 'radio':15 'rock':17,19 'rosanna':1A 's':11 'set':21,23 'the':5C,9 'toto':2B 'unsorted':16,18
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'classic rock', 'progressive rock', 'pop', 'rock']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737216.5032208  (2021-05-11 14:46:56)
                             'size'  5284123