======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '216'
                                          'artist'  "Fred Waring's Pennsylvanians"
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  'Laugh, Clown, Laugh!'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', '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-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '009'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '134.824'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 1928 and peaked at #1 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 1928 and peaked at #1'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '134.824'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1928'
'TIT2' (Title/songname/content description)         'Laugh, Clown, Laugh!'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               "Fred Waring's Pennsylvanians"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '009'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.96 dB'
'TXXX:replaygain_track_peak'                        '0.745856'

========================== row from database ==========================
                                              'id'  1517264
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_009 - Fred Waring_s Pennsylvanians - Laugh, Clown, Laugh! 80 M (3.36).mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  216
                                           'genre'  prerock-unsorted
                                        'filesize'  2172260
                                           'mtime'  1621697502
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_009 Waring_s 80 M (3.36) prerock unsorted
                                      'tag_artist'  Fred Waring's Pennsylvanians
                                     'tag_release'  Billboard 1928
                                       'tag_title'  Laugh, Clown, Laugh!
                                             'bpm'  134.824
                                    'search_title'  'clown':3,4 'laugh':1,2
                                   'search_artist'  'fred':1 'pennsylvanians':5 's':3 'waring':2 'warings':4
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '009':6 '1928':5 '3':11 '336':13 '36':12 '80':9 'country':4 'exotica':2 'jazz':1 'm':10 'oldies':3 'prerock':14 's':8 'unsorted':15 'waring':7
                                    'search_combo'  '009':17 '1928':11C,16 '3':22 '336':24 '36':23 '80':20 'billboard':10C 'clown':3A,4A 'country':15 'exotica':13 'fred':5B 'jazz':12 'laugh':1A,2A 'm':21 'oldies':14 'pennsylvanians':9B 'prerock':25 's':7B,19 'unsorted':26 'waring':6B,18 'warings':8B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697502.3857408  (2021-05-22 17:31:42)
                             'size'  2172260