======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '170'
                                          'artist'  'Billy Murray & American Quartet'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  "He's A College Boy -3-1910 Victor"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', "
 "'q-play-2', 'Q-JZFKS-1', 'Q-OLDST-1', 'q-chart-1', 'q-drums-1', 'q-other-2', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['vaudeville', 'barbershop', '1910s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1910'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '140.7'
                                             '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)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '140.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1910'
'TIT2' (Title/songname/content description)         "He's A College Boy -3-1910 Victor"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Murray & American Quartet'
'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:lastfmtags'                                   ['vaudeville', 'barbershop', '1910s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.88 dB'
'TXXX:replaygain_track_peak'                        '0.696379'

========================== row from database ==========================
                                              'id'  1504146
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1910/Billy Murray & American Quartet - He_s a College Boy -3-1910 Victor.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  170
                                           'genre'  prerock-vocal
                                        'filesize'  3494599
                                           'mtime'  1630255269
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop He_s prerock vocal
                                      'tag_artist'  Billy Murray & American Quartet
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  He's A College Boy -3-1910 Victor
                                             'bpm'  140.7
                                    'search_title'  '1910':8 '3':7 '31910':9 'a':4 'boy':6 'college':5 'he':1 'hes':3 's':2 'victor':10
                                   'search_artist'  'american':3 'billy':1 'murray':2 'quartet':4
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 'country':4 'exotica':2 'he':6 'jazz':1 'oldies':3 'prerock':8 's':7 'vocal':9
                                    'search_combo'  '00oldiepop':24 '1910':8A '3':7A '31910':9A 'a':4A 'album':16C 'american':13B 'billy':11B 'boy':6A 'college':5A 'country':23 'exotica':21 'he':1A,25 'hes':3A 'jazz':20 'murray':12B 'non':15C 'nonalbum':17C 'oldies':22 'prerock':27 'quartet':14B 's':2A,26 'tracks':18C,19C 'victor':10A 'vocal':28
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['vaudeville', 'barbershop', '1910s']
                                        'tag_date'  1910
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1630255268.881175  (2021-08-29 18:41:08)
                             'size'  3494599