======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '172'
                                          'artist'  'Billy Jones & Ernest Hare'
                                     'text_people'  ''
                                         'release'  'Columbia   194-D'
                                           'title'  "Go 'long Mule"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', '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-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['perfect', 'vaudeville', '1920s', 'all', 'acoustic era']"
                                     'discogstags'  "['novelty', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1924'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '109.8'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Columbia   194-D'
'TBPM' (BPM (beats per minute))                     '109.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1924-08-08'
'TIT2' (Title/songname/content description)         "Go 'long Mule"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '172000'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Jones & Ernest Hare'
'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:discogstags'                                  ['novelty', 'pop']
'TXXX:lastfmtags'                                   ['perfect', 'vaudeville', '1920s', 'all', 'acoustic era']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.65 dB'
'TXXX:replaygain_track_peak'                        '0.527675'

========================== row from database ==========================
                                              'id'  1504828
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1924/Billy Jones & Ernest Hare - Go _Long Mule 8-8-1924.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  172
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3524680
                                           'mtime'  1620525513
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1924 _Long 8 8 1924 prerock jb jazz unsorted
                                      'tag_artist'  Billy Jones & Ernest Hare
                                     'tag_release'  Columbia   194-D
                                       'tag_title'  Go 'long Mule
                                             'bpm'  109.8
                                    'search_title'  'go':1 'long':2,3 'mule':4
                                   'search_artist'  'billy':1 'ernest':3 'hare':4 'jones':2
                                  'search_release'  '194':2 '194d':4 'columbia':1 'd':3
                                     'search_rest'  '00oldiepop':5 '1924':6 '8':8 'country':4 'exotica':2 'jazz':1 'jb':10 'long':7 'oldies':3 'prerock':9 'unsorted':11
                                    'search_combo'  '00oldiepop':17 '1924':18 '194':10C '194d':12C '8':20 'billy':5B 'columbia':9C 'country':16 'd':11C 'ernest':7B 'exotica':14 'go':1A 'hare':8B 'jazz':13 'jb':22 'jones':6B 'long':2A,3A,19 'mule':4A 'oldies':15 'prerock':21 'unsorted':23
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['perfect', 'vaudeville', '1920s', 'all', 'acoustic era']
                                        'tag_date'  1924
                                     'discogstags'  ['novelty', 'pop']

============================== file details ==============================
                                           'mtime'  1620525512.9550498  (2021-05-09 03:58:32)
                             'size'  3524680