<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '190'
                                          'artist'  'Eddie Bo &amp; the Chain Gang'
                                     'text_people'  ''
                                         'release'  'Funky16Corners Blog'
                                           'title'  'Disco Party Pt.2'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', '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'
                                             'bpm'  '142.4'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382da760>

'COMM:iTunNORM:eng'                                 (' 0000018E 00000204 00000627 00000850 000186CE 000186CE 00004588 00005798 '
 '000186CE 000186CE')
'TALB' (Album/Movie/Show title)                     'Funky16Corners Blog'
'TBPM' (BPM (beats per minute))                     '142.4'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Disco Party Pt.2'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eddie Bo &amp; the Chain Gang'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.86 dB'
'TXXX:replaygain_track_peak'                        '0.797428'

========================== row from database ==========================
                                              'id'  1522744
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Eddie Bo & the Chain Gang - Disco Party Pt.2.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  190
                                           'genre'  funk or soul
                                        'filesize'  4585201
                                           'mtime'  1628357818
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s funk soul
                                      'tag_artist'  Eddie Bo & the Chain Gang
                                     'tag_release'  Funky16Corners Blog
                                       'tag_title'  Disco Party Pt.2
                                             'bpm'  142.4
                                    'search_title'  '2':4 'disco':1 'party':2 'pt':3 'pt2':5
                                   'search_artist'  'bo':2 'chain':4 'eddie':1 'gang':5 'the':3
                                  'search_release'  'blog':2 'funky16corners':1
                                     'search_rest'  '70':6 'easy':4 'funk':2 'instr':5 's':7 'soul':3 'swing':1
                                    'search_combo'  '2':4A '70':18 'blog':12C 'bo':7B 'chain':9B 'disco':1A 'easy':16 'eddie':6B 'funk':14 'funky16corners':11C 'gang':10B 'instr':17 'party':2A 'pt':3A 'pt2':5A 's':19 'soul':15 'swing':13 'the':8B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           '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-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357818.291137  (2021-08-07 19:36:58)
                             'size'  4585201