======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '241'
                                          'artist'  'Baker, Chet'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Stardust'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', "
 "'q-play-2', 'Q-JZFKS-3', 'Q-OLDST-2', 'q-chart-2', 'q-drums-1', 'q-other-4', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['jazz', 'trumpet', 'cool jazz', 'vocal jazz', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-salon or easy'
                                             'bpm'  '86.808'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '86.808'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-salon or easy'
'TIT2' (Title/songname/content description)         'Stardust'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Baker, Chet'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'trumpet', 'cool jazz', 'vocal jazz', 'blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.92 dB'
'TXXX:replaygain_track_peak'                        '0.764039'

========================== row from database ==========================
                                              'id'  1319365
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Chet Baker - cifsa9a4.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  241
                                           'genre'  prerock-jb-jazz-soft-salon or easy
                                        'filesize'  3864299
                                           'mtime'  1620541227
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] cifsa9a4 prerock jb jazz soft salon or easy
                                      'tag_artist'  Baker, Chet
                                     'tag_release'  None
                                       'tag_title'  Stardust
                                             'bpm'  86.808
                                    'search_title'  'stardust':1
                                   'search_artist'  'baker':1,2 'chet':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'cifsa9a4':7 'easy':14 'files':5,6 'jazz':10 'jb':9 'loose':3,4 'or':13 'prerock':8 'salon':12 'soft':11 'unsorted':2
                                    'search_combo'  '00poprockelectronic':5 'baker':2B,3B 'chet':4B 'cifsa9a4':11 'easy':18 'files':9,10 'jazz':14 'jb':13 'loose':7,8 'or':17 'prerock':12 'salon':16 'soft':15 'stardust':1A 'unsorted':6
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'trumpet', 'cool jazz', 'vocal jazz', 'blues']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620541226.6757493  (2021-05-09 08:20:26)
                             'size'  3864299