<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '171'
                                          'artist'  'Wayne King'
                                     'text_people'  ''
                                         'release'  'Wayne King'
                                           'title'  'The Waltz You Saved for Me'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['spotify', 'all', 'jazz', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '142.508'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d812e0>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1523043"/>
'PRIV:AverageLevel:;\x15\x00\x00'                   PRIV(owner='AverageLevel', data=b';\x15\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Wayne King'
'TBPM' (BPM (beats per minute))                     '142.508'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'The Waltz You Saved for Me'
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '171142'
'TPE1' (Lead performer(s)/Soloist(s))               'Wayne King'
'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:lastfmtags'                                   ['spotify', 'all', 'jazz', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '-0.52 dB'
'TXXX:replaygain_track_peak'                        '0.603716'

========================== row from database ==========================
                                              'id'  1523043
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/wayne king - the waltz you saved for me.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  171
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  2746368
                                           'mtime'  1620527998
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection wayne king the waltz you saved me prerock jb jazz lounge exotica bossa
                                      'tag_artist'  Wayne King
                                     'tag_release'  Wayne King
                                       'tag_title'  The Waltz You Saved for Me
                                             'bpm'  142.508
                                    'search_title'  'for':5 'me':6 'saved':4 'the':1 'waltz':2 'you':3
                                   'search_artist'  'king':2 'wayne':1
                                  'search_release'  'king':2 'wayne':1
                                     'search_rest'  '30':5 'bossa':18 'collection':7 'country':4 'exotica':2 'jazz':1 'jb':16 'king':9 'lounge':17 'me':14 'oldies':3 'prerock':15 's':6 'saved':13 'the':10 'waltz':11 'wayne':8 'you':12
                                    'search_combo'  '30':15 'bossa':28 'collection':17 'country':14 'exotica':12 'for':5A 'jazz':11 'jb':26 'king':8B,10C,19 'lounge':27 'me':6A,24 'oldies':13 'prerock':25 's':16 'saved':4A,23 'the':1A,20 'waltz':2A,21 'wayne':7B,9C,18 'you':3A,22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['spotify', 'all', 'jazz', 'swing']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527998.0229607  (2021-05-09 04:39:58)
                             'size'  2746368