======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '211'
                                          'artist'  'Jeanette MacDonald & Nelson Eddy'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Ah Sweet Mystery Of Life'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', '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'  "['out of our heads', 'campy', 'female vocalist', '30s', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '130.6'
                                             'key'  '4A'
                                        '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))                     '130.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1935-03-20'
'TIT2' (Title/songname/content description)         'Ah Sweet Mystery Of Life'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '211000'
'TPE1' (Lead performer(s)/Soloist(s))               'Jeanette MacDonald & Nelson Eddy'
'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'                                   ['out of our heads', 'campy', 'female vocalist', '30s', 'vocal']
'TXXX:q-bass'                                       '1'
'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'                        '+1.50 dB'
'TXXX:replaygain_track_peak'                        '0.498874'

========================== row from database ==========================
                                              'id'  1472874
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1935/Jeanette MacDonald - Ah Sweet Mystery Of Life (+ Nelson Eddy) 20-3-1935.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  211
                                           'genre'  prerock-vocal
                                        'filesize'  4277771
                                           'mtime'  1620666448
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1935 (+ Eddy) 20 3 1935 prerock vocal
                                      'tag_artist'  Jeanette MacDonald & Nelson Eddy
                                     'tag_release'  None
                                       'tag_title'  Ah Sweet Mystery Of Life
                                             'bpm'  130.6
                                    'search_title'  'ah':1 'life':5 'mystery':3 'of':4 'sweet':2
                                   'search_artist'  'donald':6 'eddy':4 'jeanette':1 'mac':5 'macdonald':2 'nelson':3
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1935':6 '20':9 '3':10 'country':4 'eddy':7,8 'exotica':2 'jazz':1 'oldies':3 'prerock':11 'vocal':12
                                    'search_combo'  '00oldiepop':16 '1935':17 '20':20 '3':21 'ah':1A 'country':15 'donald':11B 'eddy':9B,18,19 'exotica':13 'jazz':12 'jeanette':6B 'life':5A 'mac':10B 'macdonald':7B 'mystery':3A 'nelson':8B 'of':4A 'oldies':14 'prerock':22 'sweet':2A 'vocal':23
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['out of our heads', 'campy', 'female vocalist', '30s', 'vocal']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666447.5730717  (2021-05-10 19:07:27)
                             'size'  4277771