======================== unified (from filesystem) ========================
                                         'bitrate'  '266.91'
                                        'duration'  '561'
                                          'artist'  'Prynum'
                                     'text_people'  ''
                                         'release'  'Obstacles'
                                           'title'  'Oasis of the Porcelain Birds'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'post rock', 'progressive rock']"
                                     'discogstags'  "['psychedelic rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2018'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '103.2'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:cover'                                        type PictureType.COVER_FRONT (Cover (front)) b'cover'
                                     
'TALB' (Album/Movie/Show title)                     'Obstacles'
'TBPM' (BPM (beats per minute))                     '103.2'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDRC' (Recording time)                             '2018'
'TIT2' (Title/songname/content description)         'Oasis of the Porcelain Birds'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Prynum'
'TPE2' (Band/orchestra/accompaniment)               'Prynum'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['psychedelic rock', 'rock']
'TXXX:lastfmtags'                                   ['instrumental', 'post rock', 'progressive rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.80 dB'
'TXXX:replaygain_track_peak'                        '0.467109'

========================== row from database ==========================
                                              'id'  1411904
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/prynum - Obstacles/Prynum - Obstacles - 07 Oasis of the Porcelain Birds.mp3
                                         'working'  None
                                         'bitrate'  266
                                    'duration_sec'  561
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  18914563
                                           'mtime'  1620737311
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy prynum 07 rock cppex psychedelic
                                      'tag_artist'  Prynum
                                     'tag_release'  Obstacles
                                       'tag_title'  Oasis of the Porcelain Birds
                                             'bpm'  103.2
                                    'search_title'  'birds':5 'oasis':1 'of':2 'porcelain':4 'the':3
                                   'search_artist'  'prynum':1
                                  'search_release'  'obstacles':1
                                     'search_rest'  'classicprogpsy':1 'cppex':4 'prynum':2 'psychedelic':5 'rock':3
                                    'search_combo'  'birds':5A 'classicprogpsy':8 'cppex':11 'oasis':1A 'obstacles':7C 'of':2A 'porcelain':4A 'prynum':6B,9 'psychedelic':12 'rock':10 'the':3A
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'post rock', 'progressive rock']
                                        'tag_date'  2018
                                     'discogstags'  ['psychedelic rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620737311.1854959  (2021-05-11 14:48:31)
                             'size'  18914563