======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '170'
                                          'artist'  'Clarence Williams'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "T Ain't Nobody's Biz-ness If I Do"
                                           '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-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['early jazz', 'blues', 'jazz', '30s', 'piano']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1923'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '105.1'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '105.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1923-10'
'TIT2' (Title/songname/content description)         "T Ain't Nobody's Biz-ness If I Do"
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '170000'
'TPE1' (Lead performer(s)/Soloist(s))               'Clarence Williams'
'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'                                   ['early jazz', 'blues', 'jazz', '30s', 'piano']
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.16 dB'
'TXXX:replaygain_track_peak'                        '0.574546'

========================== row from database ==========================
                                              'id'  1508024
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1923/Clarence Williams - T Ain_t Nobody_s Biz-Ness If I Do -10-1923.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  170
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3502068
                                           'mtime'  1620525119
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1923 Ain_t Nobody_s Ness 10 1923 prerock jb jazz unsorted
                                      'tag_artist'  Clarence Williams
                                     'tag_release'  None
                                       'tag_title'  T Ain't Nobody's Biz-ness If I Do
                                             'bpm'  105.1
                                    'search_title'  'ain':2 'aint':4 'biz':8 'bizness':10 'do':13 'i':12 'if':11 'ness':9 'nobody':5 'nobodys':7 's':6 't':1,3
                                   'search_artist'  'clarence':1 'williams':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1923':6 'ain':7 'country':4 'exotica':2 'jazz':1 'jb':13 'ness':11 'nobody':9 'oldies':3 'prerock':12 's':10 't':8 'unsorted':14
                                    'search_combo'  '00oldiepop':20 '1923':21 'ain':2A,22 'aint':4A 'biz':8A 'bizness':10A 'clarence':14B 'country':19 'do':13A 'exotica':17 'i':12A 'if':11A 'jazz':16 'jb':28 'ness':9A,26 'nobody':5A,24 'nobodys':7A 'oldies':18 'prerock':27 's':6A,25 't':1A,3A,23 'unsorted':29 'williams':15B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6B
                                           '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['early jazz', 'blues', 'jazz', '30s', 'piano']
                                        'tag_date'  1923
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525119.1884937  (2021-05-09 03:51:59)
                             'size'  3502068