======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '167'
                                          'artist'  'Lord Executor'
                                     'text_people'  ''
                                         'release'  ('History of Carnival: Christmas, Carnival, Calenda and Calypso from Trinidad, '
 '1933-1939')
                                           'title'  'Christmas is a Joyful Day'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', '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']")
                                      'lastfmtags'  "['calypso', '30s', 'caribbean', 'world']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1937'
                                        'comments'  ''
                                           'genre'  'loc-style-calypso;set-th-christmas'
                                             'bpm'  '100.856'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000004D7 00000437 00001276'
'COMM:iTunNORM:eng'                                 (' 000004D7 00000437 00001276 00001C87 00002727 000186A0 00005B07 00005F2A '
 '00002727 000186A0')
'TALB' (Album/Movie/Show title)                     ('History of Carnival: Christmas, Carnival, Calenda and Calypso from Trinidad, '
 '1933-1939')
'TBPM' (BPM (beats per minute))                     '100.856'
'TCON' (Content type, a.k.a. Genre)                 ['loc-style-calypso', 'set-th-christmas']
'TDRC' (Recording time)                             '1937'
'TENC' (Encoded by)                                 'ggs'
'TIT2' (Title/songname/content description)         'Christmas is a Joyful Day'
'TKEY' (Initial key)                                '6A'
'TOAL' (Original album/movie/show title)            'mbd 905 / mbd 905'
'TPE1' (Lead performer(s)/Soloist(s))               'Lord Executor'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['calypso', '30s', 'caribbean', 'world']
'TXXX:q-bass'                                       '2'
'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'                        '+1.70 dB'
'TXXX:replaygain_track_peak'                        '0.534433'

========================== row from database ==========================
                                              'id'  675928
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/history of carnival/History of Carnival - Christmas, Calenda and Calypso from Trinidad, 1933-1939/Christmas is a Joyful Day (Lord Executor).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  167
                                           'genre'  loc-style-calypso;set-th-christmas
                                        'filesize'  4056834
                                           'mtime'  1620528315
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country history carnival (Lord Executor) loc style calypso;set th christmas
                                      'tag_artist'  Lord Executor
                                     'tag_release'  History of Carnival: Christmas, Carnival, Calenda and Calypso from Trinidad, 1933-1939
                                       'tag_title'  Christmas is a Joyful Day
                                             'bpm'  100.856
                                    'search_title'  'a':3 'christmas':1 'day':5 'is':2 'joyful':4
                                   'search_artist'  'executor':2 'lord':1
                                  'search_release'  '1933':13 '19331939':15 '1939':14 'and':8 'calenda':7 'calypso':9 'carnival':3,4 'christmas':5,6 'from':10 'history':1 'of':2 'trinidad':11,12
                                     'search_rest'  'calypso':13,15 'carnival':6 'christmas':18 'country':4 'executor':9,10 'exotica':2 'history':5 'jazz':1 'loc':11 'lord':7,8 'oldies':3 'set':14,16 'style':12 'th':17
                                    'search_combo'  '1933':20C '19331939':22C '1939':21C 'a':3A 'and':15C 'calenda':14C 'calypso':16C,35,37 'carnival':10C,11C,28 'christmas':1A,12C,13C,40 'country':26 'day':5A 'executor':7B,31,32 'exotica':24 'from':17C 'history':8C,27 'is':2A 'jazz':23 'joyful':4A 'loc':33 'lord':6B,29,30 'of':9C 'oldies':25 'set':36,38 'style':34 'th':39 'trinidad':18C,19C
                                    'tag_tracknum'  14
                                      'num_images'  1
                                             '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-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['calypso', '30s', 'caribbean', 'world']
                                        'tag_date'  1937
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528315.231796  (2021-05-09 04:45:15)
                             'size'  4056834