======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '158'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'please please me'
                                           'title'  "baby it's you"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1963'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '112.696'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'please please me'
'TBPM' (BPM (beats per minute))                     '112.696'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1963'
'TIT2' (Title/songname/content description)         "baby it's you"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Beatles'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.12 dB'
'TXXX:replaygain_track_peak'                        '0.421321'

========================== row from database ==========================
                                              'id'  1529364
                                            'path'  /data/Music/Bulk/00poprockelectronic/Beatles/_63-please please me/The Beatles - Baby It_s you.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  158
                                           'genre'  rock-cppex-classic
                                        'filesize'  2530726
                                           'mtime'  1636039028
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic _63 Baby It_s rock cppex classic
                                      'tag_artist'  The Beatles
                                     'tag_release'  please please me
                                       'tag_title'  baby it's you
                                             'bpm'  112.696
                                    'search_title'  'baby':1 'it':2 'its':4 's':3 'you':5
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'me':2 'please':1
                                     'search_rest'  '00poprockelectronic':1 '63':2 'baby':3 'classic':8 'cppex':7 'it':4 'rock':6 's':5
                                    'search_combo'  '00poprockelectronic':10 '63':11 'baby':1A,12 'beatles':7B 'classic':17 'cppex':16 'it':2A,13 'its':4A 'me':9C 'please':8C 'rock':15 's':3A,14 'the':6B 'you':5A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1963
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636039028.0113978  (2021-11-04 16:17:08)
                             'size'  2530726