======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '161'
                                          'artist'  'Rae Eleanor Ball'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Melody In F (Rubinstein)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1923'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted;mi-strings-violin'
                                             'bpm'  '142.6'
                                             'key'  '7B'
                                        '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))                     '142.6'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-unsorted', 'mi-strings-violin']
'TDRC' (Recording time)                             '1923'
'TIT2' (Title/songname/content description)         'Melody In F (Rubinstein)'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '161000'
'TPE1' (Lead performer(s)/Soloist(s))               'Rae Eleanor Ball'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'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'                        '+2.81 dB'
'TXXX:replaygain_track_peak'                        '0.462719'

========================== row from database ==========================
                                              'id'  1470111
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1923/Rae Eleanor Ball - Melody In F (Rubinstein) 1923.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  161
                                           'genre'  prerock-unsorted;mi-strings-violin
                                        'filesize'  3308525
                                           'mtime'  1620528069
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1923 1923 prerock unsorted;mi strings violin
                                      'tag_artist'  Rae Eleanor Ball
                                     'tag_release'  None
                                       'tag_title'  Melody In F (Rubinstein)
                                             'bpm'  142.6
                                    'search_title'  'f':3 'in':2 'melody':1 'rubinstein':4,5
                                   'search_artist'  'ball':3 'eleanor':2 'rae':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1923':6 'country':4 'exotica':2 'jazz':1 'mi':9,11 'oldies':3 'prerock':7 'strings':12 'unsorted':8,10 'violin':13
                                    'search_combo'  '00oldiepop':13 '1923':14 'ball':8B 'country':12 'eleanor':7B 'exotica':10 'f':3A 'in':2A 'jazz':9 'melody':1A 'mi':17,19 'oldies':11 'prerock':15 'rae':6B 'rubinstein':4A,5A 'strings':20 'unsorted':16,18 'violin':21
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1923
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528069.033312  (2021-05-09 04:41:09)
                             'size'  3308525