======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '124'
                                          'artist'  'David Cain'
                                     'text_people'  ''
                                         'release'  'BBC Radiophonic Music'
                                           'title'  'Autumn And Winter'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-UNU-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['bbc', 'bbc radiophonic workshop', 'british', 'soundtrack', 'electronic', "
 "'experimental']")
                                     'discogstags'  "['electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '27'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '144.233'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'BBC Radiophonic Music'
'TBPM' (BPM (beats per minute))                     '144.233'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Autumn And Winter'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'BBC Radiophonic Workshop'
'TPE2' (Band/orchestra/accompaniment)               'David Cain'
'TRCK' (Track number/Position in set)               '27'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'experimental']
'TXXX:lastfmtags'                                   ['bbc',
 'bbc radiophonic workshop',
 'british',
 'soundtrack',
 'electronic',
 'experimental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                        '+1.47 dB'
'TXXX:replaygain_track_peak'                        '0.500629'

========================== row from database ==========================
                                              'id'  254640
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/0sound_effects/BBC radiophonic workshop/David Cain/BBC Radiophonic Music/27 Autumn And Winter.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  124
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  2978763
                                           'mtime'  1636915492
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 0sound_effects radiophonic workshop 27 electronic experimental oddness
                                      'tag_artist'  David Cain
                                     'tag_release'  BBC Radiophonic Music
                                       'tag_title'  Autumn And Winter
                                             'bpm'  144.233
                                    'search_title'  'and':2 'autumn':1 'winter':3
                                   'search_artist'  'cain':2 'david':1
                                  'search_release'  'bbc':1 'music':3 'radiophonic':2
                                     'search_rest'  '0sound':1 '27':5 'effects':2 'electronic':6 'experimental':7 'oddness':8 'radiophonic':3 'workshop':4
                                    'search_combo'  '0sound':9 '27':13 'and':2A 'autumn':1A 'bbc':6C 'cain':5B 'david':4B 'effects':10 'electronic':14 'experimental':15 'music':8C 'oddness':16 'radiophonic':7C,11 'winter':3A 'workshop':12
                                    'tag_tracknum'  27
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['bbc', 'bbc radiophonic workshop', 'british', 'soundtrack', 'electronic', 'experimental']
                                        'tag_date'  1971
                                     'discogstags'  ['electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1636915491.9114878  (2021-11-14 19:44:51)
                             'size'  2978763