======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '133'
                                          'artist'  'Paragon Ragtime Orchestra'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Aviation Rag (Janya 1912)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  ''
                                            'date'  '1912'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '109.883'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            'Sound edited by Breda4@hotma'
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '109.883'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1912'
'TIT2' (Title/songname/content description)         'Aviation Rag (Janya 1912)'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '133000'
'TPE1' (Lead performer(s)/Soloist(s))               'Paragon Ragtime Orchestra'
'TRCK' (Track number/Position in set)               '06'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.52 dB'
'TXXX:replaygain_track_peak'                        '0.791994'

========================== row from database ==========================
                                              'id'  1440240
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1912/Paragon Ragtime Orchestra - Aviation Rag (Janya 1912).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  133
                                           'genre'  prerock-band
                                        'filesize'  2760829
                                           'mtime'  1620559297
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop prerock band
                                      'tag_artist'  Paragon Ragtime Orchestra
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Aviation Rag (Janya 1912)
                                             'bpm'  109.883
                                    'search_title'  '1912':5,6 'aviation':1 'janya':3,4 'rag':2
                                   'search_artist'  'orchestra':3 'paragon':1 'ragtime':2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 'band':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':6
                                    'search_combo'  '00oldiepop':19 '1912':5A,6A 'album':11C 'aviation':1A 'band':21 'country':18 'exotica':16 'janya':3A,4A 'jazz':15 'non':10C 'nonalbum':12C 'oldies':17 'orchestra':9B 'paragon':7B 'prerock':20 'rag':2A 'ragtime':8B 'tracks':13C,14C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['q-vocals-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'q-bass-3', 'q-grit-1']
                                        'tag_date'  1912
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559297.443767  (2021-05-09 13:21:37)
                             'size'  2760829