======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '207'
                                          'artist'  'Wendy Carlos'
                                     'text_people'  ''
                                         'release'  'Switched On Bach'
                                           'title'  'Sinfonia to Cantata No. 29'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'electronic', 'experimental', 'classical', 'moog']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '13'
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-early;mi-earlysynth'
                                             'bpm'  '100.7'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Switched On Bach'
'TBPM' (BPM (beats per minute))                     '100.7'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental-early', 'mi-earlysynth']
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Sinfonia to Cantata No. 29'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Wendy Carlos'
'TRCK' (Track number/Position in set)               '1/13'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, LAME dll 3.96, 320 Kbit/s, Joint Stereo, Normal quality'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soundtrack', 'electronic', 'experimental', 'classical', 'moog']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.67 dB'
'TXXX:replaygain_track_peak'                        '0.582184'

========================== row from database ==========================
                                              'id'  1370873
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wendy Carlos - Switched On Bach/01 Sinfonia to Cantata No. 29.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  207
                                           'genre'  electronic-experimental-early;mi-earlysynth
                                        'filesize'  8562085
                                           'mtime'  1636401894
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 01 electronic experimental early;mi earlysynth
                                      'tag_artist'  Wendy Carlos
                                     'tag_release'  Switched On Bach
                                       'tag_title'  Sinfonia to Cantata No. 29
                                             'bpm'  100.7
                                    'search_title'  '29':6 'cantata':3 'no':4,5 'sinfonia':1 'to':2
                                   'search_artist'  'carlos':2 'wendy':1
                                  'search_release'  'bach':3 'on':2 'switched':1
                                     'search_rest'  'early':3,5 'earlysynth':7 'electronic':1 'experimental':2 'mi':4,6
                                    'search_combo'  '29':6A 'bach':11C 'cantata':3A 'carlos':8B 'early':14,16 'earlysynth':18 'electronic':12 'experimental':13 'mi':15,17 'no':4A,5A 'on':10C 'sinfonia':1A 'switched':9C 'to':2A 'wendy':7B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10B
                                           '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-1', 'q-syn-3', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'electronic', 'experimental', 'classical', 'moog']
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636401894.1703937  (2021-11-08 21:04:54)
                             'size'  8562085