======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '166'
                                          'artist'  'Peggy Lee'
                                     'text_people'  ''
                                         'release'  'Fever'
                                           'title'  'Mack the knife'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'female vocalists', 'oldies', 'swing']"
                                     'discogstags'  "['jazz', 'pop', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing;prerock-jb-jazz-vocal'
                                             'bpm'  '142.708'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Fever'
'TBPM' (BPM (beats per minute))                     '142.708'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-soft-swing', 'prerock-jb-jazz-vocal']
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Mack the knife'
'TKEY' (Initial key)                                '8B'
'TLEN' (Length)                                     '166000'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Peggy Lee'
'TRCK' (Track number/Position in set)               '05'
'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:discogstags'                                  ['jazz', 'pop', 'vocal']
'TXXX:lastfmtags'                                   ['blues', 'jazz', 'female vocalists', 'oldies', 'swing']
'TXXX:original release date'                        ['1958', '1958']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.55 dB'
'TXXX:replaygain_track_peak'                        '0.715311'

========================== row from database ==========================
                                              'id'  783331
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Lee, Peggy/New Folder/Peggy Lee - Mack the Knife.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  166
                                           'genre'  prerock-jb-jazz-soft-swing;prerock-jb-jazz-vocal
                                        'filesize'  2658176
                                           'mtime'  1620531237
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Lee, New Folder Knife prerock jb jazz soft swing;prerock jb jazz vocal
                                      'tag_artist'  Peggy Lee
                                     'tag_release'  Fever
                                       'tag_title'  Mack the knife
                                             'bpm'  142.708
                                    'search_title'  'knife':3 'mack':1 'the':2
                                   'search_artist'  'lee':2 'peggy':1
                                  'search_release'  'fever':1
                                     'search_rest'  'country':4 'exotica':2 'folder':8 'jazz':1 'jb':11 'knife':9 'lee':5,6 'new':7 'oldies':3 'prerock':10,14,16 'soft':12 'swing':13,15 'vocal':17
                                    'search_combo'  'country':10 'exotica':8 'fever':6C 'folder':14 'jazz':7 'jb':17 'knife':3A,15 'lee':5B,11,12 'mack':1A 'new':13 'oldies':9 'peggy':4B 'prerock':16,20,22 'soft':18 'swing':19,21 'the':2A 'vocal':23
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', '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-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'jazz', 'female vocalists', 'oldies', 'swing']
                                        'tag_date'  1958
                                     'discogstags'  ['jazz', 'pop', 'vocal']

============================== file details ==============================
                                           'mtime'  1620531236.9680247  (2021-05-09 05:33:56)
                             'size'  2658176