======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '253'
                                          'artist'  'Enigma'
                                     'text_people'  ''
                                         'release'  'New Pure Moods (disc 2)'
                                           'title'  'Sadness Part 1'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['new age', 'electronica', 'electronic', 'chillout', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments;set-pl-billboard'
                                             'bpm'  '127.204'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'New Pure Moods (disc 2)'
'TBPM' (BPM (beats per minute))                     '127.204'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-classical or classical instruments', 'set-pl-billboard']
'TIT2' (Title/songname/content description)         'Sadness Part 1'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Enigma'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['new age', 'electronica', 'electronic', 'chillout', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.10 dB'
'TXXX:replaygain_track_peak'                        '0.757610'

========================== row from database ==========================
                                              'id'  179840
                                            'path'  /data/Music/Bulk/00instruments-classical/Unsorted/Enigma__MBZ;#Enigma;#New Pure Moods (disc 2);#10;#Sadness Part 1.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  253
                                           'genre'  prerock-classical or classical instruments;set-pl-billboard
                                        'filesize'  6088089
                                           'mtime'  1637329808
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Unsorted Enigma__MBZ;#Enigma;#New 2);#10;#Sadness prerock classical or classical instruments;set pl billboard
                                      'tag_artist'  Enigma
                                     'tag_release'  New Pure Moods (disc 2)
                                       'tag_title'  Sadness Part 1
                                             'bpm'  127.204
                                    'search_title'  '1':3 'part':2 'sadness':1
                                   'search_artist'  'enigma':1
                                  'search_release'  '2':6,7 'disc':4,5 'moods':3 'new':1 'pure':2
                                     'search_rest'  '00instruments':1 '10':13,16 '2':12,15 'billboard':25 'classical':2 'enigma':4,6,8,10 'instruments':20,22 'mbz':5,9 'new':7,11 'or':19 'pl':24 'prerock':18 'sadness':14,17 'set':21,23 'unsorted':3
                                    'search_combo'  '00instruments':12 '1':3A '10':24,27 '2':10C,11C,23,26 'billboard':36 'classical':13 'disc':8C,9C 'enigma':4B,15,17,19,21 'instruments':31,33 'mbz':16,20 'moods':7C 'new':5C,18,22 'or':30 'part':2A 'pl':35 'prerock':29 'pure':6C 'sadness':1A,25,28 'set':32,34 'unsorted':14
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-1', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['new age', 'electronica', 'electronic', 'chillout', 'ambient']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637329808.100021  (2021-11-19 14:50:08)
                             'size'  6088089