======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '596'
                                          'artist'  'Glenn Gould'
                                     'text_people'  ''
                                         'release'  'The Glenn Gould Silver Jubilee Album'
                                           'title'  ('Ludwig van Beethoven: Symphony No. 6:  I - Allegro ma non troppo (trans. F- '
 'L...')
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'bach', 'baroque', 'classical', 'canadian']"
                                     'discogstags'  "['baroque', 'classical', 'interview', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '107.3'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Glenn Gould Silver Jubilee Album'
'TBPM' (BPM (beats per minute))                     '107.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         ('Ludwig van Beethoven: Symphony No. 6:  I - Allegro ma non troppo (trans. F- '
 'L...')
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Glenn Gould'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['baroque', 'classical', 'interview', 'classical']
'TXXX:lastfmtags'                                   ['piano', 'bach', 'baroque', 'classical', 'canadian']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.42 dB'
'TXXX:replaygain_track_peak'                        '0.659811'

========================== row from database ==========================
                                              'id'  1364087
                                            'path'  /data/Music/Bulk/00instruments-classical/CD63A - The Glenn Gould Silver Jubilee Album/13.Ludwig van Beethoven_ Symphony No. 6_  I - Allegro ma non troppo (trans. F- L....mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  596
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  23850076
                                           'mtime'  1637329781
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical CD63A 13.Ludwig Beethoven_ 6_ prerock classical or classical instruments
                                      'tag_artist'  Glenn Gould
                                     'tag_release'  The Glenn Gould Silver Jubilee Album
                                       'tag_title'  Ludwig van Beethoven: Symphony No. 6:  I - Allegro ma non troppo (trans. F- L...
                                             'bpm'  107.3
                                    'search_title'  '6':8,9 'allegro':11 'beethoven':3,4 'f':17,18 'i':10 'l':19,20 'ludwig':1 'ma':12 'no':6,7 'non':13 'symphony':5 'trans':15,16 'troppo':14 'van':2
                                   'search_artist'  'glenn':1 'gould':2
                                  'search_release'  'album':6 'glenn':2 'gould':3 'jubilee':5 'silver':4 'the':1
                                     'search_rest'  '00instruments':1 '13':4 '13ludwig':6 '6':8 'beethoven':7 'cd63a':3 'classical':2 'instruments':11 'ludwig':5 'or':10 'prerock':9
                                    'search_combo'  '00instruments':29 '13':32 '13ludwig':34 '6':8A,9A,36 'album':28C 'allegro':11A 'beethoven':3A,4A,35 'cd63a':31 'classical':30 'f':17A,18A 'glenn':21B,24C 'gould':22B,25C 'i':10A 'instruments':39 'jubilee':27C 'l':19A,20A 'ludwig':1A,33 'ma':12A 'no':6A,7A 'non':13A 'or':38 'prerock':37 'silver':26C 'symphony':5A 'the':23C 'trans':15A,16A 'troppo':14A 'van':2A
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['piano', 'bach', 'baroque', 'classical', 'canadian']
                                        'tag_date'  2006
                                     'discogstags'  ['baroque', 'classical', 'interview', 'classical']

============================== file details ==============================
                                           'mtime'  1637329780.6368978  (2021-11-19 14:49:40)
                             'size'  23850076