======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '168'
                                          'artist'  'Tod Machover'
                                     'text_people'  ''
                                         'release'  'IRCAM - Un Portrait'
                                           'title'  'Real Time Processing II'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-1', 'q-drums-1', 'q-other-4', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['electronic', 'contemporary classical', 'composer', 'opera', 'american']"
                                     'discogstags'  "['contemporary', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  '1983'
                                        'comments'  ''
                                           'genre'  'electronic-experimental;set-pl-mor'
                                             'bpm'  '133.2'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'IRCAM - Un Portrait'
'TBPM' (BPM (beats per minute))                     '133.2'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental', 'set-pl-mor']
'TDRC' (Recording time)                             '1983'
'TIT2' (Title/songname/content description)         'Real Time Processing II'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tod Machover'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '20'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  ['contemporary', 'classical']
'TXXX:lastfmtags'                                   ['electronic', 'contemporary classical', 'composer', 'opera', 'american']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.80 dB'
'TXXX:replaygain_track_peak'                        '0.846033'

========================== row from database ==========================
                                              'id'  1379431
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Tod Machover - IRCAM - Un Portrait/20 Real Time Processing II.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  168
                                           'genre'  electronic-experimental;set-pl-mor
                                        'filesize'  7269601
                                           'mtime'  1636920562
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 20 electronic experimental;set pl mor
                                      'tag_artist'  Tod Machover
                                     'tag_release'  IRCAM - Un Portrait
                                       'tag_title'  Real Time Processing II
                                             'bpm'  133.2
                                    'search_title'  'ii':4 'processing':3 'real':1 'time':2
                                   'search_artist'  'machover':2 'tod':1
                                  'search_release'  'ircam':1 'portrait':3 'un':2
                                     'search_rest'  '20':1 'electronic':2 'experimental':3,5 'mor':8 'pl':7 'set':4,6
                                    'search_combo'  '20':10 'electronic':11 'experimental':12,14 'ii':4A 'ircam':7C 'machover':6B 'mor':17 'pl':16 'portrait':9C 'processing':3A 'real':1A 'set':13,15 'time':2A 'tod':5B 'un':8C
                                    'tag_tracknum'  20
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'contemporary classical', 'composer', 'opera', 'american']
                                        'tag_date'  1983
                                     'discogstags'  ['contemporary', 'classical']

============================== file details ==============================
                                           'mtime'  1636920562.09138  (2021-11-14 21:09:22)
                             'size'  7269601