<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '212'
                                          'artist'  "Fred Wesley &amp; the J.B's"
                                     'text_people'  ''
                                         'release'  'Funky16Corners Blog'
                                           'title'  "Damn Right I Am Somebody Pts. 1 (rtt. funk-jazz '74)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '98.4'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d81130>

'TALB' (Album/Movie/Show title)                     'Funky16Corners Blog'
'TBPM' (BPM (beats per minute))                     '98.4'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         "Damn Right I Am Somebody Pts. 1 (rtt. funk-jazz '74)"
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               "Fred Wesley &amp; the J.B's"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.567035'

========================== row from database ==========================
                                              'id'  1530974
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Fred Wesley & the J.B_s - Damn Right I Am Somebody Pts. 1 (rtt. funk-jazz _74).mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  212
                                           'genre'  funk or soul-funk
                                        'filesize'  6799387
                                           'mtime'  1620665600
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing soul EASY Instr 70_s J.B_s _74) soul
                                      'tag_artist'  Fred Wesley & the J.B's
                                     'tag_release'  Funky16Corners Blog
                                       'tag_title'  Damn Right I Am Somebody Pts. 1 (rtt. funk-jazz '74)
                                             'bpm'  98.4
                                    'search_title'  '1':8 '74':14,15 'am':4 'damn':1 'funk':11 'funkjazz':13 'i':3 'jazz':12 'pts':6,7 'right':2 'rtt':9,10 'somebody':5
                                   'search_artist'  'b':5 'fred':1 'j':4 'jbs':7 's':6 'the':3 'wesley':2
                                  'search_release'  'blog':2 'funky16corners':1
                                     'search_rest'  '70':5 '74':12,13 'b':8 'easy':3 'instr':4 'j':7 'jb':10 's':6,9,11 'soul':2 'swing':1
                                    'search_combo'  '1':8A '70':29 '74':14A,15A,36,37 'am':4A 'b':20B,32 'blog':24C 'damn':1A 'easy':27 'fred':16B 'funk':11A 'funkjazz':13A 'funky16corners':23C 'i':3A 'instr':28 'j':19B,31 'jazz':12A 'jb':34 'jbs':22B 'pts':6A,7A 'right':2A 'rtt':9A,10A 's':21B,30,33,35 'somebody':5A 'soul':26 'swing':25 'the':18B 'wesley':17B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665599.798735  (2021-05-10 18:53:19)
                             'size'  6799387