======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '193'
                                          'artist'  "Clarence Williams with Howard McGhee's Orchestra"
                                     'text_people'  ''
                                         'release'  "More Mellow Cats 'n' Kittens"
                                           'title'  "Clarence Williams with Howard McGhee's Orch. - Bacon Blues"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1946'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '99.518'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

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'COMM:iTunes_CDDB_IDs:eng'                          '24+0772BBC4B7F7432B5D064DDA235005E8+6659197'
'TALB' (Album/Movie/Show title)                     "More Mellow Cats 'n' Kittens"
'TBPM' (BPM (beats per minute))                     '99.518'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1946'
'TENC' (Encoded by)                                 'iTunes 9.2.1'
'TIT2' (Title/songname/content description)         "Clarence Williams with Howard McGhee's Orch. - Bacon Blues"
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               "Clarence Williams with Howard McGhee's Orchestra"
'TPOS' (Part of a set)                              '1/1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.67 dB'
'TXXX:replaygain_track_peak'                        '0.493932'

========================== row from database ==========================
                                              'id'  1520702
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/Clarence Williams with Howard McGhee_s Orch. - Bacon Blues.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  193
                                           'genre'  set-th-novelty
                                        'filesize'  4640987
                                           'mtime'  1620343074
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] McGhee_s set novelty
                                      'tag_artist'  Clarence Williams with Howard McGhee's Orchestra
                                     'tag_release'  More Mellow Cats 'n' Kittens
                                       'tag_title'  Clarence Williams with Howard McGhee's Orch. - Bacon Blues
                                             'bpm'  99.518
                                    'search_title'  'bacon':10 'blues':11 'clarence':1 'ghee':13 'ghees':15 'howard':4 'mc':12 'mcghee':5 'mcghees':7 'orch':8,9 's':6,14 'williams':2 'with':3
                                   'search_artist'  'clarence':1 'ghee':10 'ghees':12 'howard':4 'mc':9 'mcghee':5 'mcghees':7 'orchestra':8 's':6,11 'williams':2 'with':3
                                  'search_release'  'cats':3 'kittens':6 'mellow':2 'more':1 'n':4,5
                                     'search_rest'  'baby':8,9 'chow':6,7 'country':4 'exotica':2 'ghee':15 'jazz':1 'mc':14 'mcghee':10 'novelty':13 'oldies':3 's':11,16 'set':12 'zimelis':5
                                    'search_combo'  'baby':41,42 'bacon':10A 'blues':11A 'cats':30C 'chow':39,40 'clarence':1A,16B 'country':37 'exotica':35 'ghee':13A,25B,48 'ghees':15A,27B 'howard':4A,19B 'jazz':34 'kittens':33C 'mc':12A,24B,47 'mcghee':5A,20B,43 'mcghees':7A,22B 'mellow':29C 'more':28C 'n':31C,32C 'novelty':46 'oldies':36 'orch':8A,9A 'orchestra':23B 's':6A,14A,21B,26B,44,49 'set':45 'williams':2A,17B 'with':3A,18B 'zimelis':38
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1946
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343073.9885633  (2021-05-07 01:17:53)
                             'size'  4640987