======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Ray Noble'
                                     'text_people'  ''
                                         'release'  'HMV B-6192'
                                           'title'  "Dreams That Don't Grow Old (vocal - Al Bowlly)"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-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-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all', 'jazz', 'orchestral jazz']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '104.9'
                                             'key'  '9B'
                                        '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)                     'HMV B-6192'
'TBPM' (BPM (beats per minute))                     '104.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1932-06-08'
'TIT2' (Title/songname/content description)         "Dreams That Don't Grow Old (vocal - Al Bowlly)"
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '176000'
'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'                                      '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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.47 dB'
'TXXX:replaygain_track_peak'                        '0.593154'

========================== row from database ==========================
                                              'id'  1510566
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Ray Noble - Dreams That Don_t Grow Old (vocal - Al Bowlly) 8-6-1932.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  prerock-band
                                        'filesize'  3603603
                                           'mtime'  1620559988
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1932 Don_t 8 1932 prerock band
                                      'tag_artist'  Ray Noble
                                     'tag_release'  HMV B-6192
                                       'tag_title'  Dreams That Don't Grow Old (vocal - Al Bowlly)
                                             'bpm'  104.9
                                    'search_title'  'al':10 'bowlly':11,12 'don':3 'dont':5 'dreams':1 'grow':6 'old':7 't':4 'that':2 'vocal':8,9
                                   'search_artist'  'noble':2 'ray':1
                                  'search_release'  '6192':3 'b':2 'b6192':4 'hmv':1
                                     'search_rest'  '00oldiepop':5 '1932':6 '8':9 'band':11 'country':4 'don':7 'exotica':2 'jazz':1 'oldies':3 'prerock':10 't':8
                                    'search_combo'  '00oldiepop':23 '1932':24 '6192':17C '8':27 'al':10A 'b':16C 'b6192':18C 'band':29 'bowlly':11A,12A 'country':22 'don':3A,25 'dont':5A 'dreams':1A 'exotica':20 'grow':6A 'hmv':15C 'jazz':19 'noble':14B 'old':7A 'oldies':21 'prerock':28 'ray':13B 't':4A,26 'that':2A 'vocal':8A,9A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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'  ['all', 'jazz', 'orchestral jazz']
                                        'tag_date'  1932
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559987.6581616  (2021-05-09 13:33:07)
                             'size'  3603603