======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '221'
                                          'artist'  'Otto Luening'
                                     'text_people'  ''
                                         'release'  'Pioneers of Electronic Music'
                                           'title'  'Low Speed (1952)'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'electronic', 'earwaves', 'avant garde', "
 "'experimental']")
                                     'discogstags'  "['contemporary', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '14'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-early;mi-earlysynth'
                                             'bpm'  '111.6'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Pioneers of Electronic Music'
'TBPM' (BPM (beats per minute))                     '111.6'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental-early', 'mi-earlysynth']
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'Dualtrack'
'TIT2' (Title/songname/content description)         'Low Speed (1952)'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Otto Luening'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/14'
'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:discogstags'                                  ['contemporary', 'classical']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'electronic',
 'earwaves',
 'avant garde',
 '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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.05 dB'
'TXXX:replaygain_track_peak'                        '0.960477'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='http://dualtrack.blogspot.com')

========================== row from database ==========================
                                              'id'  769049
                                            'path'  /data/Music/Bulk/00instruments-classical/va - pioneers of electronic music (1991, 2006 re)/02 - Otto Luening - Low Speed (1952).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  221
                                           'genre'  electronic-experimental-early;mi-earlysynth
                                        'filesize'  9397494
                                           'mtime'  1637329140
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical va pioneers electronic music (1991, 2006 re) 02 electronic experimental early;mi earlysynth
                                      'tag_artist'  Otto Luening
                                     'tag_release'  Pioneers of Electronic Music
                                       'tag_title'  Low Speed (1952)
                                             'bpm'  111.6
                                    'search_title'  '1952':3,4 'low':1 'speed':2
                                   'search_artist'  'luening':2 'otto':1
                                  'search_release'  'electronic':3 'music':4 'of':2 'pioneers':1
                                     'search_rest'  '00instruments':1 '1991':7,8 '2006':9 'classical':2 'early':13,15 'earlysynth':17 'electronic':5 'experimental':12 'mi':14,16 'music':6 'pioneers':4 're':10,11 'va':3
                                    'search_combo'  '00instruments':11 '1952':3A,4A '1991':17,18 '2006':19 'classical':12 'early':23,25 'earlysynth':27 'electronic':9C,15 'experimental':22 'low':1A 'luening':6B 'mi':24,26 'music':10C,16 'of':8C 'otto':5B 'pioneers':7C,14 're':20,21 'speed':2A 'va':13
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['contemporary classical', 'electronic', 'earwaves', 'avant garde', 'experimental']
                                        'tag_date'  2006
                                     'discogstags'  ['contemporary', 'classical']

============================== file details ==============================
                                           'mtime'  1637329140.0110762  (2021-11-19 14:39:00)
                             'size'  9397494