======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '117'
                                          'artist'  ''
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing;prerock-jb-jazz-vocal'
                                             'bpm'  '145.790'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'COMM:ID3v1 Comment:XXX'                            'e:\\Music\\MP3 Country Uploads'
'COMM:MusicMatch_Path:XXX'                          'e:\\Music\\MP3 Country Uploads\\Various_You Gotta Have Heart.mp3'
'COMM:MusicMatch_Serial:XXX'                        '2CD4408'
'TBPM' (BPM (beats per minute))                     '145.790'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-soft-swing', 'prerock-jb-jazz-vocal']
'TDRC' (Recording time)                             '1950'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '116000'
'TPE1' (Lead performer(s)/Soloist(s))               'Peggy Lee / Various Artists / Various Artists'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Mp3gain_minmax'                               '000,191'
'TXXX:Mp3gain_undo'                                 '-001,-001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:album'                                        'The Best Of The Golden Voices - Volume Two'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.82 dB'
'TXXX:replaygain_track_peak'                        '0.613872'
'TXXX:title'                                        'You Gotta Have Heart'

========================== row from database ==========================
                                              'id'  779267
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Lee, Peggy/New Folder/Peggy Lee - You Gotta Have Heart.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  117
                                           'genre'  prerock-jb-jazz-soft-swing;prerock-jb-jazz-vocal
                                        'filesize'  1882920
                                           'mtime'  1620531298
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Lee, Peggy New Folder Peggy Lee You Gotta Have Heart prerock jb jazz soft swing;prerock jb jazz vocal
                                      'tag_artist'  Peggy Lee / Various / Various
                                     'tag_release'  None
                                       'tag_title'  You Gotta Have Heart
                                             'bpm'  145.79
                                    'search_title'  'gotta':2 'have':3 'heart':4 'you':1
                                   'search_artist'  'lee':2 'peggy':1 'various':3
                                  'search_release'  
                                     'search_rest'  'country':4 'exotica':2 'folder':9 'gotta':11 'have':12 'heart':13 'jazz':1 'jb':15 'lee':5,6 'new':8 'oldies':3 'peggy':7 'prerock':14,18,20 'soft':16 'swing':17,19 'vocal':21 'you':10
                                    'search_combo'  'country':4 'exotica':2 'folder':9 'gotta':11 'have':12 'heart':13 'jazz':1 'jb':15 'lee':5,6 'new':8 'oldies':3 'peggy':7 'prerock':14,18,20 'soft':16 'swing':17,19 'vocal':21 'you':10
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-piano-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620531297.946469  (2021-05-09 05:34:57)
                             'size'  1882920