======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '201'
                                          'artist'  'Green Brothers'
                                     'text_people'  ''
                                         'release'  'Okeh  4398'
                                           'title'  'All By Myself (Novelty Band)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', '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'  "['blues', 'soul', 'rhythm and blues', 'indie', 'hip-hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1921'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '84.1'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           "Sound edited from 78's by Breda4@hotmail.com"
'TALB' (Album/Movie/Show title)                     'Okeh  4398'
'TBPM' (BPM (beats per minute))                     '84.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1921-07'
'TIT2' (Title/songname/content description)         'All By Myself (Novelty Band)'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '201000'
'TPE1' (Lead performer(s)/Soloist(s))               'Green Brothers'
'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'                                   ['blues', 'soul', 'rhythm and blues', 'indie', 'hip-hop']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.64 dB'
'TXXX:replaygain_track_peak'                        '0.540865'

========================== row from database ==========================
                                              'id'  1475014
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1921/Green Brothers - All By Myself (Novelty Band) -7-1921.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  201
                                           'genre'  prerock-vocal
                                        'filesize'  4134062
                                           'mtime'  1620666366
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1921 7 1921 prerock vocal
                                      'tag_artist'  Green Brothers
                                     'tag_release'  Okeh  4398
                                       'tag_title'  All By Myself (Novelty Band)
                                             'bpm'  84.1
                                    'search_title'  'all':1 'band':6,7 'by':2 'myself':3 'novelty':4,5
                                   'search_artist'  'brothers':2 'green':1
                                  'search_release'  '4398':2 'okeh':1
                                     'search_rest'  '00oldiepop':5 '1921':6 '7':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':16 '1921':17 '4398':11C '7':18 'all':1A 'band':6A,7A 'brothers':9B 'by':2A 'country':15 'exotica':13 'green':8B 'jazz':12 'myself':3A 'novelty':4A,5A 'okeh':10C 'oldies':14 'prerock':19 'vocal':20
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['blues', 'soul', 'rhythm and blues', 'indie', 'hip-hop']
                                        'tag_date'  1921
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666365.5706408  (2021-05-10 19:06:05)
                             'size'  4134062