<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '245'
                                          'artist'  'The Brian Setzer Orchestra'
                                     'text_people'  'Brian Setzer'
                                         'release'  'Dig That Crazy Christmas'
                                           'title'  'Santa Drives a Hot Rod'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', 'rock', 'rockabilly', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '13'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly;set-th-christmas'
                                             'bpm'  '125.470'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d81b20>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1338774"/>
'COMM:ID3v1 Comment:XXX'                            ' 0000114F 0000144D 0000789B'
'COMM:iTunNORM:eng'                                 (' 0000114F 0000144D 0000789B 0000A03D 0001CDBC 0001CDBC 000087B1 00008702 '
 '0002198D 0002629C')
'COMM:iTunes_CDDB_1:eng'                            'A60A700D+200611+13+150+10268+29895+46010+70188+79829+94308+112977+130911+142781+154431+166193+184594'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '12'
'TALB' (Album/Movie/Show title)                     'Dig That Crazy Christmas'
'TBPM' (BPM (beats per minute))                     '125.470'
'TCOM' (Composer)                                   'Brian Setzer'
'TCON' (Content type, a.k.a. Genre)                 ['rock-rockabilly or psychobilly', 'set-th-christmas']
'TDRC' (Recording time)                             '2005'
'TENC' (Encoded by)                                 'iTunes v4.9'
'TIT2' (Title/songname/content description)         'Santa Drives a Hot Rod'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Brian Setzer Orchestra'
'TRCK' (Track number/Position in set)               '12/13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.57 dB'
'TXXX:replaygain_track_peak'                        '0.473029'

========================== row from database ==========================
                                              'id'  1338774
                                            'path'  /data/Music/Bulk/00poprockelectronic/Brian Setzer Orchestra/Dig That Crazy Christmas/12 Santa Drives a Hot Rod.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  245
                                           'genre'  rock-rockabilly or psychobilly;set-th-christmas
                                        'filesize'  5911586
                                           'mtime'  1620525693
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 12 rock rockabilly or psychobilly;set th christmas
                                      'tag_artist'  The Brian Setzer Orchestra
                                     'tag_release'  Dig That Crazy Christmas
                                       'tag_title'  Santa Drives a Hot Rod
                                             'bpm'  125.47
                                    'search_title'  'a':3 'drives':2 'hot':4 'rod':5 'santa':1
                                   'search_artist'  'brian':2 'orchestra':4 'setzer':3 'the':1
                                  'search_release'  'christmas':4 'crazy':3 'dig':1 'that':2
                                     'search_rest'  '00poprockelectronic':1 'christmas':10 'or':4 'psychobilly':5,7 'rock':2 'rockabilly':3 'set':6,8 'th':9
                                    'search_combo'  '00poprockelectronic':14 'a':3A 'brian':7B 'christmas':13C,23 'crazy':12C 'dig':10C 'drives':2A 'hot':4A 'or':17 'orchestra':9B 'psychobilly':18,20 'rock':15 'rockabilly':16 'rod':5A 'santa':1A 'set':19,21 'setzer':8B 'th':22 'that':11C 'the':6B
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525693.4051688  (2021-05-09 04:01:33)
                             'size'  5911586