======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '269'
                                          'artist'  'Paul Whiteman & His Orchestra'
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  'My Heart Stood Still'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['20s', 'jazz', '1920s', 'dixieland', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '133'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '143.517'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1928 and peaked at #11 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 1928 and peaked at #'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '143.517'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1928'
'TENC' (Encoded by)                                 'iTunes v2.0.4'
'TIT2' (Title/songname/content description)         'My Heart Stood Still'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Whiteman & His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '133'
'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'                                   ['20s', 'jazz', '1920s', 'dixieland', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.93 dB'
'TXXX:replaygain_track_peak'                        '0.686194'

========================== row from database ==========================
                                              'id'  978106
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_133 - Paul Whiteman & His Orchestra - My Heart Stood Still 192 S (4.29).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  269
                                           'genre'  prerock-swing
                                        'filesize'  6472193
                                           'mtime'  1620562699
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_133 (4.29) prerock swing
                                      'tag_artist'  Paul Whiteman & His Orchestra
                                     'tag_release'  Billboard 1928
                                       'tag_title'  My Heart Stood Still
                                             'bpm'  143.517
                                    'search_title'  'heart':2 'my':1 'still':4 'stood':3
                                   'search_artist'  'his':3 'orchestra':4 'paul':1 'whiteman':2
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '133':6 '1928':5 '29':8 '4':7 '429':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'swing':11
                                    'search_combo'  '133':16 '1928':10C,15 '29':18 '4':17 '429':19 'billboard':9C 'country':14 'exotica':12 'heart':2A 'his':7B 'jazz':11 'my':1A 'oldies':13 'orchestra':8B 'paul':5B 'prerock':20 'still':4A 'stood':3A 'swing':21 'whiteman':6B
                                    'tag_tracknum'  133
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['20s', 'jazz', '1920s', 'dixieland', 'swing']
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562698.5609684  (2021-05-09 14:18:18)
                             'size'  6472193