======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '177'
                                          'artist'  'Boswell Sisters'
                                     'text_people'  ''
                                         'release'  'Decca   671'
                                           'title'  "I'm Gonna Sit Right Down And Write Myself A Letter"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'female vocalists', '1930s', 'big band', '30s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '89.6'
                                             '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)                     'Decca   671'
'TBPM' (BPM (beats per minute))                     '89.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1936-01-06'
'TIT2' (Title/songname/content description)         "I'm Gonna Sit Right Down And Write Myself A Letter"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '177000'
'TPE1' (Lead performer(s)/Soloist(s))               'Boswell Sisters'
'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'                                   ['jazz', 'female vocalists', '1930s', 'big band', '30s']
'TXXX:q-bass'                                       '3'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.63 dB'
'TXXX:replaygain_track_peak'                        '0.629304'

========================== row from database ==========================
                                              'id'  1505032
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/Boswell Sisters - I_m Gonna Sit Right Down And Write Myself A Letter 6-1-1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  177
                                           'genre'  prerock-vocal
                                        'filesize'  3605208
                                           'mtime'  1620666455
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 I_m 1936 prerock vocal
                                      'tag_artist'  Boswell Sisters
                                     'tag_release'  Decca   671
                                       'tag_title'  I'm Gonna Sit Right Down And Write Myself A Letter
                                             'bpm'  89.6
                                    'search_title'  'a':11 'and':8 'down':7 'gonna':4 'i':1 'im':3 'letter':12 'm':2 'myself':10 'right':6 'sit':5 'write':9
                                   'search_artist'  'boswell':1 'sisters':2
                                  'search_release'  '671':2 'decca':1
                                     'search_rest'  '00oldiepop':5 '1936':6 'country':4 'exotica':2 'i':7 'jazz':1 'm':8 'oldies':3 'prerock':9 'vocal':10
                                    'search_combo'  '00oldiepop':21 '1936':22 '671':16C 'a':11A 'and':8A 'boswell':13B 'country':20 'decca':15C 'down':7A 'exotica':18 'gonna':4A 'i':1A,23 'im':3A 'jazz':17 'letter':12A 'm':2A,24 'myself':10A 'oldies':19 'prerock':25 'right':6A 'sisters':14B 'sit':5A 'vocal':26 'write':9A
                                    '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-3', '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-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'female vocalists', '1930s', 'big band', '30s']
                                        'tag_date'  1936
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666454.646088  (2021-05-10 19:07:34)
                             'size'  3605208