======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '158'
                                          'artist'  'Neil Sedaka'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1961'
                                           'title'  'Calendar Girl'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'jazz', 'pop', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '33'
                                      'tracktotal'  ''
                                            'date'  '1961'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '123.557'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1961'
'TBPM' (BPM (beats per minute))                     '123.557'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1961'
'TIT2' (Title/songname/content description)         'Calendar Girl'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Neil Sedaka'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '33'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', '60s', 'jazz', 'pop', '50s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.333583'

========================== row from database ==========================
                                              'id'  1283577
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1961/033 - Neil Sedaka - Calendar Girl.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  158
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3802588
                                           'mtime'  1620384906
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 033 electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Neil Sedaka
                                     'tag_release'  Billboard Top Pop Singles of 1961
                                       'tag_title'  Calendar Girl
                                             'bpm'  123.557
                                    'search_title'  'calendar':1 'girl':2
                                   'search_artist'  'neil':1 'sedaka':2
                                  'search_release'  '1961':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':12 'electronic':3 'generic':4 'or':5 'pl':11 'radio':6 'set':8,10 'top100':2 'unsorted':7,9
                                    'search_combo'  '00poprockelectronic':11 '1961':10C 'billboard':5C,22 'calendar':1A 'electronic':13 'generic':14 'girl':2A 'neil':3B 'of':9C 'or':15 'pl':21 'pop':7C 'radio':16 'sedaka':4B 'set':18,20 'singles':8C 'top':6C 'top100':12 'unsorted':17,19
                                    'tag_tracknum'  33
                                      'num_images'  0
                                             'key'  1A
                                           '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-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['oldies', '60s', 'jazz', 'pop', '50s']
                                        'tag_date'  1961
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620384906.3723097  (2021-05-07 12:55:06)
                             'size'  3802588