======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '182'
                                          'artist'  'Jelly Roll Morton'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Oh Didn't He Ramble (+ Sidney Bechet)"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', '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-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['new orleans', 'ragtime', 'jazz', 'piano', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-ragtime'
                                             'bpm'  '128.7'
                                             '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'
'TBPM' (BPM (beats per minute))                     '128.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-ragtime'
'TDRC' (Recording time)                             '1939-09-14'
'TIT2' (Title/songname/content description)         "Oh Didn't He Ramble (+ Sidney Bechet)"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '182000'
'TPE1' (Lead performer(s)/Soloist(s))               'Jelly Roll Morton'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['new orleans', 'ragtime', 'jazz', 'piano', 'blues']
'TXXX:q-bass'                                       '1'
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.93 dB'
'TXXX:replaygain_track_peak'                        '0.609461'

========================== row from database ==========================
                                              'id'  1520400
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Jelly Roll Morton - Oh Didn_t He Ramble (+ Sidney Bechet) 14-9-1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  182
                                           'genre'  prerock-jb-jazz-o-ragtime
                                        'filesize'  3701562
                                           'mtime'  1620527032
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1939 Didn_t 14 9 1939 prerock jb jazz ragtime
                                      'tag_artist'  Jelly Roll Morton
                                     'tag_release'  None
                                       'tag_title'  Oh Didn't He Ramble (+ Sidney Bechet)
                                             'bpm'  128.7
                                    'search_title'  'bechet':8,9 'didn':2 'didnt':4 'he':5 'oh':1 'ramble':6 'sidney':7 't':3
                                   'search_artist'  'jelly':1 'morton':3 'roll':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1939':6 '9':9 'country':4 'didn':7 'exotica':2 'jazz':1 'jb':11 'oldies':3 'prerock':10 'ragtime':12 't':8
                                    'search_combo'  '00oldiepop':17 '1939':18 '9':21 'bechet':8A,9A 'country':16 'didn':2A,19 'didnt':4A 'exotica':14 'he':5A 'jazz':13 'jb':23 'jelly':10B 'morton':12B 'oh':1A 'oldies':15 'prerock':22 'ragtime':24 'ramble':6A 'roll':11B 'sidney':7A 't':3A,20
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['new orleans', 'ragtime', 'jazz', 'piano', 'blues']
                                        'tag_date'  1939
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527032.1947129  (2021-05-09 04:23:52)
                             'size'  3701562