======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '228'
                                          'artist'  'Herman H Harper'
                                     'text_people'  ''
                                         'release'  "Stone Soul-San Francisco's Loadstone Label"
                                           'title'  'Headed for the Streets'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-JZFKS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '85.815'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000301 000002DD 0000100F'
'COMM:iTunNORM:eng'                                 (' 00000301 000002DD 0000100F 00001306 00022325 00015FA7 0000612B 0000612C '
 '0001ADDE 00015FA7')
'TALB' (Album/Movie/Show title)                     "Stone Soul-San Francisco's Loadstone Label"
'TBPM' (BPM (beats per minute))                     '85.815'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Headed for the Streets'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Herman H Harper'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.11 dB'
'TXXX:replaygain_track_peak'                        '0.698007'

========================== row from database ==========================
                                              'id'  1533401
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Stone Soul-San Francisco_s Loadstone Label/04 - Herman H Harper - Headed for the Streets.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  228
                                           'genre'  funk or soul
                                        'filesize'  4727689
                                           'mtime'  1628357660
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul Francisco_s 04 funk soul
                                      'tag_artist'  Herman H Harper
                                     'tag_release'  Stone Soul-San Francisco's Loadstone Label
                                       'tag_title'  Headed for the Streets
                                             'bpm'  85.815
                                    'search_title'  'for':2 'headed':1 'streets':4 'the':3
                                   'search_artist'  'h':2 'harper':3 'herman':1
                                  'search_release'  'francisco':5 'franciscos':7 'label':9 'loadstone':8 's':6 'san':3 'soul':2 'soulsan':4 'stone':1
                                     'search_rest'  'francisco':4 'funk':2 's':5 'soul':3 'swing':1
                                    'search_combo'  'for':2A 'francisco':12C,20 'franciscos':14C 'funk':18 'h':6B 'harper':7B 'headed':1A 'herman':5B 'label':16C 'loadstone':15C 's':13C,21 'san':10C 'soul':9C,19 'soulsan':11C 'stone':8C 'streets':4A 'swing':17 'the':3A
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357660.0222917  (2021-08-07 19:34:20)
                             'size'  4727689