<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '192'
                                          'artist'  'Madeon'
                                     'text_people'  ''
                                         'release'  'Beatport: Top 100 - January 2015 (Indie Dance / Nu Disco)'
                                           'title'  "You're On (Original Mix) (Feat. Kyan)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'poptron', 'electronic', 'disco house', 'french']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '100.00'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d75670>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1518604"/>
'TALB' (Album/Movie/Show title)                     'Beatport: Top 100 - January 2015 (Indie Dance / Nu Disco)'
'TBPM' (BPM (beats per minute))                     '100.00'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2014'
'TIT2' (Title/songname/content description)         "You're On (Original Mix) (Feat. Kyan)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Madeon'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:author'                                       'Madeon'
'TXXX:compatible_brands'                            'M4A mp42isom'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'poptron', 'electronic', 'disco house', 'french']
'TXXX:major_brand'                                  'M4A'
'TXXX:minor_version'                                '0'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.12 dB'
'TXXX:replaygain_track_peak'                        '0.367680'

========================== row from database ==========================
                                              'id'  1518604
                                            'path'  /data/Music/Bulk/00poprockelectronic/Marvin & Guy - 2015-2016/Madeon - You_re On (Original Mix) (Feat. Kyan).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  192
                                           'genre'  electronic-unsorted
                                        'filesize'  7802545
                                           'mtime'  1621630184
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Marvin & Guy 2016 You_re electronic unsorted
                                      'tag_artist'  Madeon
                                     'tag_release'  Beatport: Top 100 - January 2015 (Indie Dance / Nu Disco)
                                       'tag_title'  You're On (Original Mix) (Feat. Kyan)
                                             'bpm'  100.0
                                    'search_title'  'feat':9,10 'kyan':11,12 'mix':7,8 'on':4 'original':5,6 're':2 'you':1 'youre':3
                                   'search_artist'  'madeon':1
                                  'search_release'  '100':4 '2015':6 'beatport':1,2 'dance':9 'disco':11,12 'indie':7,8 'january':5 'nu':10 'top':3
                                     'search_rest'  '00poprockelectronic':1 '2016':4 'electronic':7 'guy':3 'marvin':2 're':6 'unsorted':8 'you':5
                                    'search_combo'  '00poprockelectronic':26 '100':17C '2015':19C '2016':29 'beatport':14C,15C 'dance':22C 'disco':24C,25C 'electronic':32 'feat':9A,10A 'guy':28 'indie':20C,21C 'january':18C 'kyan':11A,12A 'madeon':13B 'marvin':27 'mix':7A,8A 'nu':23C 'on':4A 'original':5A,6A 're':2A,31 'top':16C 'unsorted':33 'you':1A,30 'youre':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'poptron', 'electronic', 'disco house', 'french']
                                        'tag_date'  2014
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621630183.9971285  (2021-05-21 22:49:43)
                             'size'  7802545