======================== unified (from filesystem) ========================
                                         'bitrate'  '183.576'
                                        'duration'  '464'
                                          'artist'  "Huun-Huur-Tu, with the Bulgarian Women's Choir Angelite et al"
                                     'text_people'  ''
                                         'release'  'Deep in the Heart of Tuva'
                                           'title'  'Fly, Fly My Sadness'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  '20'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'loc-russia-tuva'
                                             'bpm'  '139.754'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Deep in the Heart of Tuva'
'TBPM' (BPM (beats per minute))                     '139.754'
'TCON' (Content type, a.k.a. Genre)                 'loc-russia-tuva'
'TDRC' (Recording time)                             '1996'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Fly, Fly My Sadness'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Huun-Huur-Tu, with the Bulgarian Women's Choir Angelite et al"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '15/20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.34 dB'
'TXXX:replaygain_track_peak'                        '0.533681'

========================== row from database ==========================
                                              'id'  1522261
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Deep on the hear of Tuva/15. Huun-Huur-Tu, with the Bulgarian Women_s Choir Angelite et al - Fly, Fly My Sadness.mp3
                                         'working'  None
                                         'bitrate'  183
                                    'duration_sec'  464
                                           'genre'  loc-russia-tuva
                                        'filesize'  10671645
                                           'mtime'  1621629138
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia on hear 15. Women_s loc russia tuva
                                      'tag_artist'  Huun-Huur-Tu, with the Bulgarian Women's Choir Angelite et al
                                     'tag_release'  Deep in the Heart of Tuva
                                       'tag_title'  Fly, Fly My Sadness
                                             'bpm'  139.754
                                    'search_title'  'fly':1,2 'my':3 'sadness':4
                                   'search_artist'  'al':14 'angelite':12 'bulgarian':7 'choir':11 'et':13 'huun':1 'huunhuurtu':4 'huur':2 's':9 'the':6 'tu':3 'with':5 'women':8 'womens':10
                                  'search_release'  'deep':1 'heart':4 'in':2 'of':5 'the':3 'tuva':6
                                     'search_rest'  '00asia':1 '15':4,5 'hear':3 'loc':8 'on':2 'russia':9 's':7 'tuva':10 'women':6
                                    'search_combo'  '00asia':25 '15':28,29 'al':18B 'angelite':16B 'bulgarian':11B 'choir':15B 'deep':19C 'et':17B 'fly':1A,2A 'hear':27 'heart':22C 'huun':5B 'huunhuurtu':8B 'huur':6B 'in':20C 'loc':32 'my':3A 'of':23C 'on':26 'russia':33 's':13B,31 'sadness':4A 'the':10B,21C 'tu':7B 'tuva':24C,34 'with':9B 'women':12B,30 'womens':14B
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629137.6916344  (2021-05-21 22:32:17)
                             'size'  10671645