======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '159'
                                          'artist'  'Sarah Vaughan'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Fabulous Character'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '147'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '84.350'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.350'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Fabulous Character'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Sarah Vaughan'
'TRCK' (Track number/Position in set)               '147'
'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'                                   ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.35 dB'
'TXXX:replaygain_track_peak'                        '0.419325'

========================== row from database ==========================
                                              'id'  1432803
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-147 - Sarah Vaughan - Fabulous Character.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  159
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  6388196
                                           'mtime'  1620527734
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 147 prerock jb jazz unsorted
                                      'tag_artist'  Sarah Vaughan
                                     'tag_release'  None
                                       'tag_title'  Fabulous Character
                                             'bpm'  84.35
                                    'search_title'  'character':2 'fabulous':1
                                   'search_artist'  'sarah':1 'vaughan':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '147':7 '1956':6 'country':4 'exotica':2 'jazz':1 'jb':9 'oldies':3 'prerock':8 'unsorted':10
                                    'search_combo'  '00oldiepop':9 '147':11 '1956':10 'character':2A 'country':8 'exotica':6 'fabulous':1A 'jazz':5 'jb':13 'oldies':7 'prerock':12 'sarah':3B 'unsorted':14 'vaughan':4B
                                    'tag_tracknum'  147
                                      'num_images'  0
                                             'key'  6B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527733.8766303  (2021-05-09 04:35:33)
                             'size'  6388196