======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '153'
                                          'artist'  'Mary Hopkin'
                                     'text_people'  ''
                                         'release'  'Rob Hoeke - 1970'
                                           'title'  "Knock, Knock, Who's There"
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['oldies', 'british', 'female vocalists', '60s', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-unsorted'
                                             'bpm'  '96.3'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Rob Hoeke - 1970'
'TBPM' (BPM (beats per minute))                     '96.3'
'TCON' (Content type, a.k.a. Genre)                 'ifs-unsorted'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         "Knock, Knock, Who's There"
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Mary Hopkin'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'british', 'female vocalists', '60s', 'folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.561174'

========================== row from database ==========================
                                              'id'  1515564
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Rob Hoeke - 1970/Mary Hopkin - Knock, Knock, Who_s There.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  153
                                           'genre'  ifs-unsorted
                                        'filesize'  3675006
                                           'mtime'  1620572485
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted Who_s ifs unsorted
                                      'tag_artist'  Mary Hopkin
                                     'tag_release'  Rob Hoeke - 1970
                                       'tag_title'  Knock, Knock, Who's There
                                             'bpm'  96.3
                                    'search_title'  'knock':1,2 's':4 'there':6 'who':3 'whos':5
                                   'search_artist'  'hopkin':2 'mary':1
                                  'search_release'  '1970':3 'hoeke':2 'rob':1
                                     'search_rest'  '00poprockelectronic':1 'ifs':5 's':4 'unsorted':2 'who':3
                                    'search_combo'  '00poprockelectronic':12 '1970':11C 'hoeke':10C 'hopkin':8B 'ifs':16 'knock':1A,2A 'mary':7B 'rob':9C 's':4A,15 'there':6A 'unsorted':13 'who':3A,14 'whos':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'british', 'female vocalists', '60s', 'folk']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572485.0555146  (2021-05-09 17:01:25)
                             'size'  3675006