======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '489'
                                          'artist'  'Ella Fitzgerald'
                                     'text_people'  ''
                                         'release'  'Compact Jazz Ella Fitzgerald'
                                           'title'  'How High the Moon'
                                           '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-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'female vocalists', 'jazz vocal', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '146.000'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Compact Jazz Ella Fitzgerald'
'TBPM' (BPM (beats per minute))                     '146.000'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TIT2' (Title/songname/content description)         'How High the Moon'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ella Fitzgerald'
'TRCK' (Track number/Position in set)               '16'
'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'                                   ['blues', 'jazz', 'female vocalists', 'jazz vocal', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.45 dB'
'TXXX:replaygain_track_peak'                        '0.853313'

========================== row from database ==========================
                                              'id'  674597
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Ella Fitzgerald/MBZ;#Ella Fitzgerald;#Compact Jazz Ella Fitzgerald;#16;#How High the Moon.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  489
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  7831184
                                           'mtime'  1620528657
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#Ella Fitzgerald;#Compact Fitzgerald;#16;#How prerock jb jazz unsorted
                                      'tag_artist'  Ella Fitzgerald
                                     'tag_release'  Compact Jazz Ella Fitzgerald
                                       'tag_title'  How High the Moon
                                             'bpm'  146.0
                                    'search_title'  'high':2 'how':1 'moon':4 'the':3
                                   'search_artist'  'ella':1 'fitzgerald':2
                                  'search_release'  'compact':1 'ella':3 'fitzgerald':4 'jazz':2
                                     'search_rest'  '16':14,17 'compact':10,12 'country':4 'ella':6,8 'exotica':2 'fitzgerald':9,11,13,16 'how':15,18 'jazz':1 'jb':20 'mbz':5,7 'oldies':3 'prerock':19 'unsorted':21
                                    'search_combo'  '16':24,27 'compact':7C,20,22 'country':14 'ella':5B,9C,16,18 'exotica':12 'fitzgerald':6B,10C,19,21,23,26 'high':2A 'how':1A,25,28 'jazz':8C,11 'jb':30 'mbz':15,17 'moon':4A 'oldies':13 'prerock':29 'the':3A 'unsorted':31
                                    'tag_tracknum'  16
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'jazz', 'female vocalists', 'jazz vocal', 'swing']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528657.1514635  (2021-05-09 04:50:57)
                             'size'  7831184