======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '182'
                                          'artist'  'Louis Armstrong'
                                     'text_people'  ''
                                         'release'  'Billboard 1928'
                                           'title'  "Struttin' with Some Barbecue"
                                           '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-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'trumpet', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '157'
                                      'tracktotal'  ''
                                            'date'  '1928'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '97.318'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 7/14/1928 and peaked at #14 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 7/14/1928 and peaked'
'TALB' (Album/Movie/Show title)                     'Billboard 1928'
'TBPM' (BPM (beats per minute))                     '97.318'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1928'
'TIT2' (Title/songname/content description)         "Struttin' with Some Barbecue"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Louis Armstrong'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '157'
'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'                                   ['blues', 'jazz', 'trumpet', 'oldies', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+1.77 dB'
'TXXX:replaygain_track_peak'                        '0.491184'

========================== row from database ==========================
                                              'id'  1504556
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Billboard 1928/1928_157 - Louis Armstrong - Struttin_ with Some Barbecue 128 M (3.02).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  182
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2922496
                                           'mtime'  1620528250
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1928_157 Struttin_ 128 M (3.02) prerock jb jazz unsorted
                                      'tag_artist'  Louis Armstrong
                                     'tag_release'  Billboard 1928
                                       'tag_title'  Struttin' with Some Barbecue
                                             'bpm'  97.318
                                    'search_title'  'barbecue':5 'some':4 'struttin':1,2 'with':3
                                   'search_artist'  'armstrong':2 'louis':1
                                  'search_release'  '1928':2 'billboard':1
                                     'search_rest'  '02':11 '128':8 '157':6 '1928':5 '3':10 '302':12 'country':4 'exotica':2 'jazz':1 'jb':14 'm':9 'oldies':3 'prerock':13 'struttin':7 'unsorted':15
                                    'search_combo'  '02':20 '128':17 '157':15 '1928':9C,14 '3':19 '302':21 'armstrong':7B 'barbecue':5A 'billboard':8C 'country':13 'exotica':11 'jazz':10 'jb':23 'louis':6B 'm':18 'oldies':12 'prerock':22 'some':4A 'struttin':1A,2A,16 'unsorted':24 'with':3A
                                    'tag_tracknum'  157
                                      'num_images'  0
                                             'key'  4A
                                           '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-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'jazz', 'trumpet', 'oldies', 'swing']
                                        'tag_date'  1928
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528250.0829375  (2021-05-09 04:44:10)
                             'size'  2922496