======================== unified (from filesystem) ========================
                                         'bitrate'  '160.062'
                                        'duration'  '264'
                                          'artist'  'Central African Republic'
                                     'text_people'  ''
                                         'release'  'Songs of the Earth - Astonishing and Rare Voices'
                                           'title'  'Ulepa'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-3', 'Q-LOCALNESS-4', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'loc-unsorted-mix'
                                             'bpm'  '98.886'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Songs of the Earth - Astonishing and Rare Voices'
'TBPM' (BPM (beats per minute))                     '98.886'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted-mix'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Ulepa'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Central African Republic'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '17'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.32 dB'
'TXXX:replaygain_track_peak'                        '0.838567'

========================== row from database ==========================
                                              'id'  475456
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Songs Of The Earth： Astonishing and Rare Voices (Auvidis, Unesco, 1998) [160k]/17 - Central African Republic - Ulepa.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  264
                                           'genre'  loc-unsorted-mix
                                        'filesize'  5297861
                                           'mtime'  1621627243
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Of The Earth： (Auvidis, Unesco, 1998) [160k] 17 loc unsorted mix
                                      'tag_artist'  Central African Republic
                                     'tag_release'  Songs of the Earth - Astonishing and Rare Voices
                                       'tag_title'  Ulepa
                                             'bpm'  98.886
                                    'search_title'  'ulepa':1
                                   'search_artist'  'african':2 'central':1 'republic':3
                                  'search_release'  'and':6 'astonishing':5 'earth':4 'of':2 'rare':7 'songs':1 'the':3 'voices':8
                                     'search_rest'  '1':4,5,6 '160k':19,20 '1998':17,18 'auvidis':13,14 'earth':10,11,12 'loc':21 'mix':23 'of':8 'the':9 'trad':7 'unesco':15,16 'unsorted':22 'va':1,2 'world':3
                                    'search_combo'  '1':16,17,18 '160k':31,32 '1998':29,30 'african':3B 'and':10C 'astonishing':9C 'auvidis':25,26 'central':2B 'earth':8C,22,23,24 'loc':33 'mix':35 'of':6C,20 'rare':11C 'republic':4B 'songs':5C 'the':7C,21 'trad':19 'ulepa':1A 'unesco':27,28 'unsorted':34 'va':13,14 'voices':12C 'world':15
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627242.8977895  (2021-05-21 22:00:42)
                             'size'  5297861