======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '212'
                                          'artist'  'Miles Davis'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Blues For Pablo (Take 1)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fusion', 'jazz', 'trumpet', 'blues', 'bebop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '144.335'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '144.335'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Blues For Pablo (Take 1)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Miles Davis'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['fusion', 'jazz', 'trumpet', 'blues', 'bebop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+4.34 dB'
'TXXX:replaygain_track_peak'                        '0.909016'

========================== row from database ==========================
                                              'id'  1357648
                                            'path'  /data/Music/Bulk/00poprockelectronic/Miles Davis/Miles Ahead [1957]/Miles Davis - Blues For Pablo (Take 1).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  212
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3399680
                                           'mtime'  1620540939
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Ahead [1957] prerock jb jazz unsorted
                                      'tag_artist'  Miles Davis
                                     'tag_release'  None
                                       'tag_title'  Blues For Pablo (Take 1)
                                             'bpm'  144.335
                                    'search_title'  '1':6,7 'blues':1 'for':2 'pablo':3 'take':4,5
                                   'search_artist'  'davis':2 'miles':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1957':3,4 'ahead':2 'jazz':7 'jb':6 'prerock':5 'unsorted':8
                                    'search_combo'  '00poprockelectronic':10 '1':6A,7A '1957':12,13 'ahead':11 'blues':1A 'davis':9B 'for':2A 'jazz':16 'jb':15 'miles':8B 'pablo':3A 'prerock':14 'take':4A,5A 'unsorted':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['fusion', 'jazz', 'trumpet', 'blues', 'bebop']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620540938.670897  (2021-05-09 08:15:38)
                             'size'  3399680