======================== unified (from filesystem) ========================
                                         'bitrate'  '159.982'
                                        'duration'  '236'
                                          'artist'  'Samantha Fox'
                                     'text_people'  ''
                                         'release'  'Billboard Top 100 - 1989'
                                           'title'  'I Wanna Have Some Fun'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'sexy', 'dance', 'female vocalists', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '122.659'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'COMM:Track:Comments:eng'                           'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top 100 - 1989'
'TBPM' (BPM (beats per minute))                     '122.659'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'I Wanna Have Some Fun'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Samantha Fox'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'sexy', 'dance', 'female vocalists', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+3.90 dB'
'TXXX:replaygain_track_peak'                        '0.491489'

========================== row from database ==========================
                                              'id'  1299226
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/087 - Samantha Fox - I Wanna Have Some Fun.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  236
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  4730733
                                           'mtime'  1621696117
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 087 electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Samantha Fox
                                     'tag_release'  Billboard Top 100 - 1989
                                       'tag_title'  I Wanna Have Some Fun
                                             'bpm'  122.659
                                    'search_title'  'fun':5 'have':3 'i':1 'some':4 'wanna':2
                                   'search_artist'  'fox':2 'samantha':1
                                  'search_release'  '100':3 '1989':4 'billboard':1 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':11 'electronic':2 'generic':3 'or':4 'pl':10 'radio':5 'set':7,9 'unsorted':6,8
                                    'search_combo'  '00poprockelectronic':12 '100':10C '1989':11C 'billboard':8C,22 'electronic':13 'fox':7B 'fun':5A 'generic':14 'have':3A 'i':1A 'or':15 'pl':21 'radio':16 'samantha':6B 'set':18,20 'some':4A 'top':9C 'unsorted':17,19 'wanna':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'sexy', 'dance', 'female vocalists', 'pop']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696117.486918  (2021-05-22 17:08:37)
                             'size'  4730733