======================== unified (from filesystem) ========================
                                         'bitrate'  '212.871'
                                        'duration'  '298'
                                          'artist'  'Laidback Luke feat. Example vs. Kaskade feat. Mindy Gledhill'
                                     'text_people'  ''
                                         'release'  'Kaskade - Essential Mix (2011-09-10)'
                                           'title'  'Natural Disaster (Instrumental Mix) vs. All That You Give (Acapella)'
                                           'quals'  ("['Q-GRIT-2', 'Q-SYN-3', 'Q-BUSY-3', 'Q-CHART-2', 'Q-HAP-3', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'Q-PLAY-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-MIXBEAT-3', 'q-bass-4', 'q-drums-4', 'q-other-3', 'q-piano-1', "
 "'q-vocals-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'pop-generic or radio-dance'
                                             'bpm'  '128.008'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Kaskade - Essential Mix (2011-09-10)'
'TBPM' (BPM (beats per minute))                     '128.008'
'TCON' (Content type, a.k.a. Genre)                 'pop-generic or radio-dance'
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Natural Disaster (Instrumental Mix) vs. All That You Give (Acapella)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Laidback Luke feat. Example vs. Kaskade feat. Mindy Gledhill'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.20 dB'
'TXXX:replaygain_track_peak'                        '0.482959'

========================== row from database ==========================
                                              'id'  1406575
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/essential mix/Kaskade - Essential Mix (2011-09-10)/15 - Laidback Luke feat. Example vs. Kaskade feat. Mindy Gledhill - Natural Disaster (Instrumental Mix) vs. All That You Give (Acapella).mp3
                                         'working'  None
                                         'bitrate'  212
                                    'duration_sec'  298
                                           'genre'  pop-generic or radio-dance
                                        'filesize'  7944049
                                           'mtime'  1622638114
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat essential mix 15 pop generic or radio dance
                                      'tag_artist'  Laidback Luke feat. Example vs. Kaskade feat. Mindy Gledhill
                                     'tag_release'  Kaskade - Essential Mix (2011-09-10)
                                       'tag_title'  Natural Disaster (Instrumental Mix) vs. All That You Give (Acapella)
                                             'bpm'  128.008
                                    'search_title'  'acapella':13,14 'all':9 'disaster':2 'give':12 'instrumental':3,4 'mix':5,6 'natural':1 'that':10 'vs':7,8 'you':11
                                   'search_artist'  'example':5 'feat':3,4 'gledhill':10 'kaskade':8 'laidback':1 'luke':2 'mindy':9 'vs':6,7
                                  'search_release'  '09':5 '10':6 '2011':4 '20110910':7 'essential':2 'kaskade':1 'mix':3
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'essential':5 'generic':2 'mix':6 'or':8 'pop':7 'radio':9 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':32 '09':29C '10':30C '2011':28C '20110910':31C 'acapella':13A,14A 'all':9A 'dance':34 'disaster':2A 'essential':26C,36 'example':19B 'feat':17B,18B 'generic':33 'give':12A 'gledhill':24B 'instrumental':3A,4A 'kaskade':22B,25C 'laidback':15B 'luke':16B 'mindy':23B 'mix':5A,6A,27C,37 'natural':1A 'or':39 'pop':38 'radio':40 'that':10A 'trapbeat':35 'vs':7A,8A,20B,21B 'you':11A
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-CHART-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-drums-4', 'Q-SYN-3', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  []
                                        'tag_date'  2011
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622638113.612935  (2021-06-02 14:48:33)
                             'size'  7944049