======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '195'
                                          'artist'  'Lena Horne'
                                     'text_people'  ''
                                         'release'  'Victor 27817'
                                           'title'  'I Gotta Right To Sing The Blues (+ Lou Bring)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-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-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1941'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-female'
                                             'bpm'  '85.1'
                                             '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)                     'Victor 27817'
'TBPM' (BPM (beats per minute))                     '85.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-female'
'TDRC' (Recording time)                             '1941-12-17'
'TIT2' (Title/songname/content description)         'I Gotta Right To Sing The Blues (+ Lou Bring)'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '195000'
'TPE1' (Lead performer(s)/Soloist(s))               'Lena Horne'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'oldies']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.13 dB'
'TXXX:replaygain_track_peak'                        '0.650070'

========================== row from database ==========================
                                              'id'  1473309
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1941/Lena Horne - I Gotta Right To Sing The Blues (+ Lou Bring) 17-12-1941.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  195
                                           'genre'  prerock-vocal-female
                                        'filesize'  3979078
                                           'mtime'  1621625748
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1941 12 1941 prerock vocal female
                                      'tag_artist'  Lena Horne
                                     'tag_release'  Victor 27817
                                       'tag_title'  I Gotta Right To Sing The Blues (+ Lou Bring)
                                             'bpm'  85.1
                                    'search_title'  'blues':7 'bring':9,10 'gotta':2 'i':1 'lou':8 'right':3 'sing':5 'the':6 'to':4
                                   'search_artist'  'horne':2 'lena':1
                                  'search_release'  '27817':2 'victor':1
                                     'search_rest'  '00oldiepop':5 '1941':6 'country':4 'exotica':2 'female':9 'jazz':1 'oldies':3 'prerock':7 'vocal':8
                                    'search_combo'  '00oldiepop':19 '1941':20 '27817':14C 'blues':7A 'bring':9A,10A 'country':18 'exotica':16 'female':23 'gotta':2A 'horne':12B 'i':1A 'jazz':15 'lena':11B 'lou':8A 'oldies':17 'prerock':21 'right':3A 'sing':5A 'the':6A 'to':4A 'victor':13C 'vocal':22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'oldies']
                                        'tag_date'  1941
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625747.8563871  (2021-05-21 21:35:47)
                             'size'  3979078