======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '150'
                                          'artist'  'Ray Noble'
                                     'text_people'  ''
                                         'release'  'Victor 25241'
                                           'title'  'Let Yourself Go (vocal - Al Bowlly & Freshmen)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-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-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all', 'jazz', 'orchestral jazz']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '120.6'
                                             'key'  '7A'
                                        '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)                     'Victor 25241'
'TBPM' (BPM (beats per minute))                     '120.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1936-01-23'
'TIT2' (Title/songname/content description)         'Let Yourself Go (vocal - Al Bowlly & Freshmen)'
'TKEY' (Initial key)                                '7A'
'TLEN' (Length)                                     '150000'
'TPE1' (Lead performer(s)/Soloist(s))               'Ray Noble'
'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:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['all', 'jazz', 'orchestral jazz']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.70 dB'
'TXXX:replaygain_track_peak'                        '0.593692'

========================== row from database ==========================
                                              'id'  1459428
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/Ray Noble - Let Yourself Go (vocal - Al Bowlly) 23-1-1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  150
                                           'genre'  prerock-band
                                        'filesize'  3048783
                                           'mtime'  1620560497
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 Bowlly) 23 1936 prerock band
                                      'tag_artist'  Ray Noble
                                     'tag_release'  Victor 25241
                                       'tag_title'  Let Yourself Go (vocal - Al Bowlly & Freshmen)
                                             'bpm'  120.6
                                    'search_title'  'al':6 'bowlly':7 'freshmen':8,9 'go':3 'let':1 'vocal':4,5 'yourself':2
                                   'search_artist'  'noble':2 'ray':1
                                  'search_release'  '25241':2 'victor':1
                                     'search_rest'  '00oldiepop':5 '1936':6 '23':9 'band':11 'bowlly':7,8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10
                                    'search_combo'  '00oldiepop':18 '1936':19 '23':22 '25241':13C 'al':6A 'band':24 'bowlly':7A,20,21 'country':17 'exotica':15 'freshmen':8A,9A 'go':3A 'jazz':14 'let':1A 'noble':11B 'oldies':16 'prerock':23 'ray':10B 'victor':12C 'vocal':4A,5A 'yourself':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['all', 'jazz', 'orchestral jazz']
                                        'tag_date'  1936
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620560497.0264769  (2021-05-09 13:41:37)
                             'size'  3048783