======================== unified (from filesystem) ========================
                                         'bitrate'  '151.636'
                                        'duration'  '293'
                                          'artist'  'Rick Astley'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Cry for Help'
                                           '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-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'dance', 'best act ever', 'rickroll', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '70'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '89.691'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1'
'TBPM' (BPM (beats per minute))                     '89.691'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Cry for Help'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Rick Astley'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '70'
'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', 'dance', 'best act ever', 'rickroll', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.10 dB'
'TXXX:replaygain_track_peak'                        '0.673550'

========================== row from database ==========================
                                              'id'  1343884
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1991/070 - Rick Astley - Cry for Help.mp3
                                         'working'  None
                                         'bitrate'  151
                                    'duration_sec'  293
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  5566464
                                           'mtime'  1621696128
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1991 070 electronic generic radio unsorted;set pl billboard
                                      'tag_artist'  Rick Astley
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Cry for Help
                                             'bpm'  89.691
                                    'search_title'  'cry':1 'for':2 'help':3
                                   'search_artist'  'astley':2 'rick':1
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1991':3 'billboard':12 'electronic':4 'generic':5 'pl':11 'radio':6 'set':8,10 'top100':2 'unsorted':7,9
                                    'search_combo'  '00poprockelectronic':12 '1':11C '1991':14 'astley':5B 'billboard':6C,23 'cry':1A 'electronic':15 'for':2A 'generic':16 'help':3A 'of':10C 'pl':22 'pop':8C 'radio':17 'rick':4B 'set':19,21 'singles':9C 'top':7C 'top100':13 'unsorted':18,20
                                    'tag_tracknum'  70
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'dance', 'best act ever', 'rickroll', 'pop']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696128.3212955  (2021-05-22 17:08:48)
                             'size'  5566464