======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '191'
                                          'artist'  'Glen Miller'
                                     'text_people'  ''
                                         'release'  'The Genius Of Glen Miller (Volume 1)'
                                           'title'  'My Blue Heaven'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'big band', '40s', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '16'
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '129.398'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Genius Of Glen Miller (Volume 1)'
'TBPM' (BPM (beats per minute))                     '129.398'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'My Blue Heaven'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Glen Miller'
'TRCK' (Track number/Position in set)               '10/16'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'big band', '40s', 'oldies']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.34 dB'
'TXXX:replaygain_track_peak'                        '0.584101'

========================== row from database ==========================
                                              'id'  973754
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Glen Miller - The Genius Of Glen Miller (Volume 1) (160) (1987)/10 - My Blue Heaven.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  191
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3838600
                                           'mtime'  1620529721
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country (160) (1987) 10 prerock jb jazz unsorted
                                      'tag_artist'  Glen Miller
                                     'tag_release'  The Genius Of Glen Miller (Volume 1)
                                       'tag_title'  My Blue Heaven
                                             'bpm'  129.398
                                    'search_title'  'blue':2 'heaven':3 'my':1
                                   'search_artist'  'glen':1 'miller':2
                                  'search_release'  '1':8,9 'genius':2 'glen':4 'miller':5 'of':3 'the':1 'volume':6,7
                                     'search_rest'  '160':5,6 '1987':7,8 'country':4 'exotica':2 'jazz':1 'jb':10 'oldies':3 'prerock':9 'unsorted':11
                                    'search_combo'  '1':13C,14C '160':19,20 '1987':21,22 'blue':2A 'country':18 'exotica':16 'genius':7C 'glen':4B,9C 'heaven':3A 'jazz':15 'jb':24 'miller':5B,10C 'my':1A 'of':8C 'oldies':17 'prerock':23 'the':6C 'unsorted':25 'volume':11C,12C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'big band', '40s', 'oldies']
                                        'tag_date'  1987
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620529721.4763288  (2021-05-09 05:08:41)
                             'size'  3838600