======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '479'
                                          'artist'  'Muddy Waters'
                                     'text_people'  ''
                                         'release'  'The Blues Collection # 11 Chicago Blues'
                                           'title'  "Floyd's Guitar Blues"
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-3', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-3', 'q-drums-3', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['delta blues', 'guitar', 'blues', 'chicago blues', 'classic blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '143.619'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Blues Collection # 11 Chicago Blues'
'TBPM' (BPM (beats per minute))                     '143.619'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TIT2' (Title/songname/content description)         "Floyd's Guitar Blues"
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Muddy Waters'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['delta blues', 'guitar', 'blues', 'chicago blues', 'classic blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.02 dB'
'TXXX:replaygain_track_peak'                        '0.687140'

========================== row from database ==========================
                                              'id'  1509855
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Muddy Waters/MBZ;#Muddy Waters;#The Blues Collection # 11 Chicago Blues;#08;#Floyd_s Guitar Blues.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  479
                                           'genre'  prerock-jb-blues
                                        'filesize'  6709990
                                           'mtime'  1620402449
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#Muddy Waters;#The Blues;#08;#Floyd_s prerock jb blues
                                      'tag_artist'  Muddy Waters
                                     'tag_release'  The Blues Collection # 11 Chicago Blues
                                       'tag_title'  Floyd's Guitar Blues
                                             'bpm'  143.619
                                    'search_title'  'blues':5 'floyd':1 'floyds':3 'guitar':4 's':2
                                   'search_artist'  'muddy':1 'waters':2
                                  'search_release'  'blues':2 'chicago':4 'collection':3 'the':1
                                     'search_rest'  '08':14,18 'blues':13,17,23 'country':4 'exotica':2 'floyd':15,19 'jazz':1 'jb':22 'mbz':5,7 'muddy':6,8 'oldies':3 'prerock':21 's':16,20 'the':10,12 'waters':9,11
                                    'search_combo'  '08':25,29 'blues':5A,9C,24,28,34 'chicago':11C 'collection':10C 'country':15 'exotica':13 'floyd':1A,26,30 'floyds':3A 'guitar':4A 'jazz':12 'jb':33 'mbz':16,18 'muddy':6B,17,19 'oldies':14 'prerock':32 's':2A,27,31 'the':8C,21,23 'waters':7B,20,22
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['delta blues', 'guitar', 'blues', 'chicago blues', 'classic blues']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402449.1267378  (2021-05-07 17:47:29)
                             'size'  6709990