======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '125'
                                          'artist'  'Nelson Riddle'
                                     'text_people'  ''
                                         'release'  'Old Time Party Music'
                                           'title'  'Who'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-2', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['lounge', 'instrumental', 'jazz', 'illstreet', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '103.5'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Old Time Party Music'
'TBPM' (BPM (beats per minute))                     '103.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TIT2' (Title/songname/content description)         'Who'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nelson Riddle'
'TPE2' (Band/orchestra/accompaniment)               'Nelson Riddle'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['lounge', 'instrumental', 'jazz', 'illstreet', 'easy listening']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.31 dB'
'TXXX:replaygain_track_peak'                        '0.691239'

========================== row from database ==========================
                                              'id'  1363070
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Nelson Riddle - richard hayman - havana in hi-fi/06. Who.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  125
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  8322412
                                           'mtime'  1620532815
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country richard hayman havana in hi fi 06. prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Nelson Riddle
                                     'tag_release'  Old Time Party Music
                                       'tag_title'  Who
                                             'bpm'  103.5
                                    'search_title'  'who':1
                                   'search_artist'  'nelson':1 'riddle':2
                                  'search_release'  'music':4 'old':1 'party':3 'time':2
                                     'search_rest'  '06':11,12 'bossa':17 'country':4 'exotica':2 'fi':10 'havana':7 'hayman':6 'hi':9 'in':8 'jazz':1 'jb':14 'lounge':15 'oldies':3 'or':16 'prerock':13 'richard':5
                                    'search_combo'  '06':18,19 'bossa':24 'country':11 'exotica':9 'fi':17 'havana':14 'hayman':13 'hi':16 'in':15 'jazz':8 'jb':21 'lounge':22 'music':7C 'nelson':2B 'old':4C 'oldies':10 'or':23 'party':6C 'prerock':20 'richard':12 'riddle':3B 'time':5C 'who':1A
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['lounge', 'instrumental', 'jazz', 'illstreet', 'easy listening']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620532815.2992072  (2021-05-09 06:00:15)
                             'size'  8322412